Simplify phpunit test names

Summary:
More & more use cases come up with empty suite names, guessing
and making test names nice is mess. Will leave it as it is, except
data set part, as it could be super long.

Test Plan: - Try running some phpunit tests with & without data sets

Reviewers: epriestley

CC: aran, Koolvin

Differential Revision: https://secure.phabricator.com/D2544
Remind user about 'arc amend' when they try to land a branch onto itself

Summary: If you develop in "master" and try to "arc land", you get an error. You can reasonably "arc amend" in this situation, most of the time. Give the user an explicit pointer.

Test Plan:
  $ arc land master
  Usage Exception: You can not land a branch onto itself -- you are trying to
  land 'master' onto 'master'. For more information on how to push changes, see
  'Pushing and Closing Revisions' in 'Arcanist User Guide: arc diff' in the
  documentation. You may be able to 'arc amend' instead.

Reviewers: csilvers, btrahan

Reviewed By: csilvers

CC: aran

Differential Revision: https://secure.phabricator.com/D2547
Improve example linter to not lint deleted paths

Summary:
It's easy to forget to do this when writing a new lint engine (like I recently
just did), so I added it to the example to improve documentation on how to write
a lint engine. This code is copied from PhutilLintEngine (as well as many
others).

Test Plan: php -l

Reviewers: jungejason, vrana, epriestley

Reviewed By: epriestley

CC: aran, Koolvin

Differential Revision: https://secure.phabricator.com/D2553
Fix arc ArcanistSvnHookPreCommitWorkflow

Summary:
there are two problems making the ArcanistSvnHookPreCommitWorkflow not working.

  - pathExists($path) will always return false because it hasn't loaded the path yet. Because of this, PhutilLintEngine will unset the path at https://secure.phabricator.com/diffusion/ARC/browse/master/src/lint/engine/phutil/PhutilLintEngine.php;032b9b30b0721c3f$46, so ArcanistSvnHookPreCommitWorkflow will have no path to lint against and never detects a problem.
  - In ArcanistSubversionHookAPI::getCurrentFileData(), the $path is already the full path in svnroot (path got from https://secure.phabricator.com/diffusion/ARC/browse/master/src/workflow/svn-hook-pre-commit/ArcanistSvnHookPreCommitWorkflow.php;032b9b30b0721c3f$72). Prepending the project root to it will make the file path to be wrong so that the file content is empty. Again, ArcanistSvnHookPreCommitWorkflow never detects a problem.

Test Plan:
changed --transaction to --revision in related code and manually ran the following command. It detected the syntaxt error correctly. 558937 is a revision with syntax error.

/usr/local/bin/php -f /home/jungejason/nfs_devtools/arcanist/bin/arc svn-hook-pre-commit     --load-phutil-library=/tmp/testwww/www/lib/arcanist --load-phutil-library=/home/jungejason/nfs_devtools/facebook/src /svnroot 558937 2>&1

Reviewers: epriestley, nh

Reviewed By: nh

CC: aran, Girish, Koolvin

Differential Revision: https://secure.phabricator.com/D2485
Allow users to define shell aliases in arc with "!"

Summary: Git supports this feature (https://git.wiki.kernel.org/index.php/Aliases), it's fairly simple to implement, and gives us a little more ammunition to dissuade users with unusual workflow requirements from actually requesting features.

Test Plan: Defined the alias described in the documentation. Ran "arc ls", "arc ls -alh", etc.

Reviewers: btrahan, csilvers

Reviewed By: csilvers

CC: aran

Differential Revision: https://secure.phabricator.com/D2552
Filename linter fix for Windows

Summary: On windows paths are separated with \.

Test Plan: - Run filename linter on windows (or some path with \)

Reviewers: epriestley

CC: aran, Koolvin

Differential Revision: https://secure.phabricator.com/D2559
Merge pull request #31 from aurelijus/filename-linter-windows

Filename linter fix for Windows
Merge pull request #32 from aurelijus/phpunit-simplify-names

Simplify phpunit test names
Provide a simpler analyzer script for killing __init__.php

Summary:
The `phutil_analyzer.php` script currently analyzes entire modules and is fairly complex. We don't need or want this in a post-__init__.php world.

This is basically a simplified version of `phutil_analyzer.php`, which takes one file and emits symbols.

Test Plan:
```$ ./scripts/phutil_symbols.php resources/test/diverse_symbols.php
{
  "have" : {
    "function"  : {
      "f" : 348
    },
    "class"     : {
      "L"      : 308,
      "A"      : 497,
      "C"      : 509,
      "D"      : 531,
      "CLocal" : 627
    },
    "interface" : {
      "ILocal" : 593
    }
  },
  "need" : {
    "function"  : {
      "g" : 402,
      "h" : 462
    },
    "class"     : {
      "B"         : 519,
      "INonlocal" : 642,
      "U"         : 552,
      "X"         : 421,
      "V"         : 557,
      "W"         : 565,
      "P"         : 572
    },
    "interface" : {
      "IForeign" : 608
    }
  }
}```

Reviewers: vrana, nh, btrahan

Reviewed By: vrana

CC: aran

Maniphest Tasks: T1103

Differential Revision: https://secure.phabricator.com/D2561
Merge branch 'master' of http://github.com/facebook/arcanist