Move `ArcanistSpellingDefaultData` into a configurable JSON file

Summary: Currently, the `ArcanistSpellingLinter` loads data from `ArcanistSpellingDefaultData`, with no way to configure the linter from an `.arclint` file. Instead we should define a format for a "dictionary" file, of which the `ArvcanistSpellingLinter` can load and of which the paths are easily configured through `.arclint`.

Test Plan:
Updated the test case and ran `arc unit`.

NOTE: I have removed the `LINT_SPELLING_PICKY` and `LINT_SPELLING_IMPORTANT` constants and replaced them with `LINT_SPELLING_FULL` and `LINT_SPELLING_PARTIAL`. This was done because it simplifies the implementation considerably and makes customization of the `ArcanistSpellingLinter` simpler, but also because these constants were not widely used in the existing implementation.

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley, #blessed_reviewers

Subscribers: epriestley, Korvin

Differential Revision: https://secure.phabricator.com/D9805
Move `PhutilLibraryMapBuilder` to `libphutil`

Summary: See D9813 for a detailed explanation.

Test Plan:
```
> ./bin/arc liberate
Finding source files...
Found 194 files.
Loading symbol cache...
Found 194 files in cache.
Building library map...
Writing map...
Done.
```

Reviewers: #blessed_reviewers, epriestley

Reviewed By: #blessed_reviewers, epriestley

Subscribers: epriestley, Korvin

Differential Revision: https://secure.phabricator.com/D9815
Regenerate library map

Summary: Ran `arc liberate` after D9805.

Test Plan: `arc liberate`

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley, #blessed_reviewers

Subscribers: epriestley, Korvin

Differential Revision: https://secure.phabricator.com/D9825
Improve the `ArcanistInfrastructureTestCase` unit tests

Summary:
Improve the `ArcanistInfrastructureTestCase` unit tests such that they will fail if any of the following conditions are satisfied:

- A symbol referenced in the `__phutil_library_map__.php` file no longer exists.
- A symbol exists in the library but is not referenced within the `__phutil_library_map__.php` file.
- A symbol extends from a different parent symbol than that declared in the `__phutil_library_map.php` file.

Test Plan: See D9824

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley, #blessed_reviewers

Subscribers: epriestley, Korvin

Differential Revision: https://secure.phabricator.com/D9826
In Arcanist, ignore extensions when unit testing the library map

Summary: See D9834. Arcanist version.

Test Plan: See D9834.

Reviewers: joshuaspence

Reviewed By: joshuaspence

Subscribers: epriestley

Differential Revision: https://secure.phabricator.com/D9835
Minor change to `ArcanistInfrastructureTestCase::testLibraryMap`

Summary: Modify `ArcanistInfrastructureTestCase::testLibraryMap` to use `phutil_get_current_library_name()` instead of hard-coding the library name.

Test Plan: See D9844.

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley, #blessed_reviewers

Subscribers: epriestley, Korvin

Differential Revision: https://secure.phabricator.com/D9846
Remove deprecated lints from `ArcanistXHPASTLinter`

Summary: After D9576, `LINT_PHP_53_FEATURES` and `LINT_PHP_54_FEATURES` are deprecated. They have been replaced by `LINT_PHP_COMPATIBILITY`.

Test Plan: `arc unit`

Reviewers: #blessed_reviewers, epriestley

Reviewed By: #blessed_reviewers, epriestley

Subscribers: epriestley, Korvin

Differential Revision: https://secure.phabricator.com/D9657
Remove `@group` annotations

Summary: I'm pretty sure that `@group` annotations are useless now... I believe that they were originally used by Diviner?

Test Plan: Eye-balled it.

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley, #blessed_reviewers

Subscribers: epriestley, Korvin, aurelijus

Differential Revision: https://secure.phabricator.com/D9855
Minor change to `ArcanistInfrastructureTestCase`

Summary: Update `ArcanistInfrastructureTestCase` after D9860 and D9861.

Test Plan: `arc unit` should do the trick.

Reviewers: #blessed_reviewers, epriestley

Reviewed By: #blessed_reviewers, epriestley

Subscribers: epriestley, Korvin

Differential Revision: https://secure.phabricator.com/D9863
Minor change to `ArcanistPhutilLibraryLinter`

Summary: Ref T5577. Modify `ArcanistPhutilLibraryLinter` to use `PhutilLibraryMapBuilder` instead of using an `ExecFuture` to run `phutil_rebuild_map.php`.

Test Plan: Ran `arc lint`.

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley, #blessed_reviewers

Subscribers: epriestley, Korvin

Maniphest Tasks: T5577

Differential Revision: https://secure.phabricator.com/D9864
Decrease the priority of the `ArcanistPhutilLibraryLinter`

Summary: Ref T5577. Decrease the priority of the `ArcanistPhutilLibraryLinter` such that it is lower than that of the `ArcanistXHPASTLinter`. There isn't any specific reason that we should do this, although it seems to generally be a reasonable idea.

Test Plan: N/A

Reviewers: #blessed_reviewers, epriestley

Reviewed By: #blessed_reviewers, epriestley

Subscribers: epriestley, Korvin

Maniphest Tasks: T5577

Differential Revision: https://secure.phabricator.com/D9866
Don't build unused linters for the `ArcanistConfigurationDrivenLintEngine`

Summary: Fixes T5124.

Test Plan: `arc lint` on a Phabricator diff that doesn't have JS files doesn't complain on missing JSHint.

Reviewers: #blessed_reviewers, joshuaspence, epriestley

Reviewed By: joshuaspence

Subscribers: epriestley, Korvin

Maniphest Tasks: T5124

Differential Revision: https://secure.phabricator.com/D9843
Allow the `ArcanistPhutilLibraryLinter` to recover from PHP syntax errors

Summary: Fixes T5577. If the `ArcanistPhutilLibraryLinter` lints a PHP file that contains a syntax error, it will die horribly. Instead, force it to continue as if nothing was wrong.

Test Plan: Introduced a PHP syntax error. Ran `arc lint` and made sure the output looked reasonable.

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley, #blessed_reviewers

Subscribers: epriestley, Korvin

Maniphest Tasks: T5577

Differential Revision: https://secure.phabricator.com/D9865
Allow the `todo` workflow to add project tags.

Summary: Fixes T4418. Allows Maniphests created through the `arc todo` workflow to have projects assigned.

Test Plan:
```
> ./bin/arc --trace --conduit-uri='http://phabricator.joshuaspence.com' todo "Test project" --project foo --project bar
libphutil loaded from '/home/joshua/workspace/github.com/phacility/libphutil/src'.
arcanist loaded from '/home/joshua/workspace/github.com/phacility/arcanist/src'.
Config: Reading user configuration file "/home/joshua/.arcrc"...
Config: Did not find system configuration at "/etc/arcconfig".
Working Copy: Reading .arcconfig from "/home/joshua/workspace/github.com/phacility/arcanist/.arcconfig".
Working Copy: Path "/home/joshua/workspace/github.com/phacility/arcanist" is part of `git` working copy "/home/joshua/workspace/github.com/phacility/arcanist".
Working Copy: Project root is at "/home/joshua/workspace/github.com/phacility/arcanist".
Config: Did not find local configuration at "/home/joshua/workspace/github.com/phacility/arcanist/.git/arc/config".
Loading phutil library from '/home/joshua/workspace/github.com/phacility/arcanist/src'...
>>> [0] <conduit> conduit.connect() <bytes = 618>
>>> [1] <http> http://phabricator.joshuaspence.com/api/conduit.connect
<<< [1] <http> 1,050,487 us
<<< [0] <conduit> 1,051,585 us
>>> [2] <conduit> project.query() <bytes = 199>
>>> [3] <http> http://phabricator.joshuaspence.com/api/project.query
<<< [3] <http> 294,584 us
<<< [2] <conduit> 294,986 us
>>> [4] <conduit> maniphest.createtask() <bytes = 313>
>>> [5] <http> http://phabricator.joshuaspence.com/api/maniphest.createtask
<<< [5] <http> 637,693 us
<<< [4] <conduit> 638,098 us
Created task T6: 'Test project' at http://phabricator.joshuaspence.com/T6
```

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley, #blessed_reviewers

Subscribers: epriestley, Korvin

Maniphest Tasks: T4418

Differential Revision: https://secure.phabricator.com/D9457
Parameterize `@{upstream}` in arc to fix Windows

Summary: We manually quote this in a couple of places. That works fine on Lunix, but does not work on Windows. Instead, explicitly parameterize the command so the correct quoting rules are applied for the OS.

Test Plan: See IRC; windows user had issues fixed by this. `arc:upstream` still works locally.

Reviewers: btrahan, chad

Reviewed By: chad

Subscribers: epriestley

Differential Revision: https://secure.phabricator.com/D9868
Minor change to `ArcanistXHPASTLinter`

Summary: Change `==` to `===`. This is a little bit cleaner because we shouldn't need type coercion here.

Test Plan: Ran `arc unit`.

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley, #blessed_reviewers

Subscribers: epriestley, Korvin

Differential Revision: https://secure.phabricator.com/D9893
Remove Phabricator reference from the linter description of `ArcanistXHPASTLinter`

Summary: The `ArcanistXHPASTLinter` is no longer //too// specific to Phabricator (Phabricator-specific XHPAST lints generally live in `ArcanistPhutilXHPASTLinter`) and //should// be better suited for general purpose usage.

Test Plan: N/A

Reviewers: #blessed_reviewers, epriestley

Reviewed By: #blessed_reviewers, epriestley

Subscribers: epriestley, Korvin

Differential Revision: https://secure.phabricator.com/D9892
Use `git diff a b` for ranges, not `git diff a..b`

Summary:
These are documented as being identical, but `git diff a b` works if `a` is a tree (for example, `4b825d...`, the empty tree hash), but `git diff a..b` does not.

Particularly, with the `a..b` form, `arc diff --base arc:empty` does not work. With the `a b` form, it does.

Test Plan: Ran `arc diff --base arc:empty` in a repository and got a diff.

Reviewers: btrahan, talshiri

Reviewed By: talshiri

Subscribers: epriestley

Differential Revision: https://secure.phabricator.com/D9898
Fix various spelling mistakes

Summary: Minor change, self-explanatory.

Test Plan: Eye-ball it.

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley, #blessed_reviewers

Subscribers: epriestley, Korvin

Differential Revision: https://secure.phabricator.com/D9910
Fix double file content in files in new subdirectories in Subversion

Summary:
Fixes T5555. Normally, when we `svn diff subdir/`, we use `--depth empty` to get only changes for the directory itself (usually, property changes).

However, this flag has no effect if the directory is newly added.

Adjust the diff parser so that if two sets of hunks are specified for a single file in a raw diff, we let the last one win instead of including both. This approach is a broadly more reasonable interpretation of these diffs.

Test Plan:
  - Added a new file in a new subdirectory in Subversion.
  - Ran `arc diff --only`.
  - No double file content in resulting diff.
  - Added unit test.
  - There's fairly comprehensive unit test coverage for this stuff.

Reviewers: btrahan, chad

Reviewed By: chad

Subscribers: epriestley

Maniphest Tasks: T5555

Differential Revision: https://secure.phabricator.com/D9921