Put back error message that shows path to missing BUILD files.

Regressed from  https://rbcommons.com/s/twitter/r/841/

Added a better unit test.

Testing Done:
ci passed https://travis-ci.org/pantsbuild/pants/builds/33185813

Bugs closed: 510

Reviewed at https://rbcommons.com/s/twitter/r/929/
Use target() alias in unit tests instead of dependencies()

This completely removes 'dependencies' from all the aliases in testing and
updates the unit test BUILD file mockups.

Testing Done:
ci.sh passes locally.

Bugs closed: 514

Reviewed at https://rbcommons.com/s/twitter/r/933/
Move some more default from pants.ini into the code

Part of a continuing effort to get pants to work with empty pants.ini

Testing Done:
ci passed.

Bugs closed: 511

Reviewed at https://rbcommons.com/s/twitter/r/941/
Add --print-stacktrace-exception argument to pants invocations in ci.sh

When the build fails in ci, the stacktrace is suppressed by default. This change tacks on the --print-exception-stacktrace to each invocation of pants. (except for during the building of the distribution - it doesn't work then.)

Testing Done:
CI is running at https://travis-ci.org/pantsbuild/pants/builds/33585119

Bugs closed: 524

Reviewed at https://rbcommons.com/s/twitter/r/942/
Code for protolib-test artifact pulled in from external repository to demonstrate protobuf-gen 'imports' feature

Followon to https://rbcommons.com/s/twitter/r/592 and https://rbcommons.com/s/twitter/r/720/

Code for protolib-test artifact pulled in from external repository to demonstrate protobuf-gen 'imports' feature

We had this code internally before, now that we have testprojects/maven_layout, there is a good place to put it.

Testing Done:
I deployed the new 1.0.1 version of the protolib-test artifact to nexus.

Manually ran pants goal bundle  examples/src/java/com/pants/examples/protobuf:protobuf-imports-example  and it worked, confirmed the ivy cache now contains the new artifact.

CI passed.

Bugs closed: 521

Reviewed at https://rbcommons.com/s/twitter/r/936/
update doco; goal() is obsolete

Reviewed at https://rbcommons.com/s/twitter/r/931/
Moved CucumberTest into testprojects

Testing Done:
ci passed.

Bugs closed: 532

Reviewed at https://rbcommons.com/s/twitter/r/948/
Re-enable filedeps - it was using a now-gone .expand_files() API.

This maintains a hack with special knowledge of the JvmApp target and
adds one more to deal with ScalaLibrary.java_sources.

Both of these hacks have unit-test coverage to help back up future
refactors away from these hacks.

Testing Done:
$ PANTS_DEV=1 ./pants goal test tests/python/pants_test/:all

CI went green here: https://travis-ci.org/pantsbuild/pants/builds/33652015

Bugs closed: 437, 522

Reviewed at https://rbcommons.com/s/twitter/r/939/
docs: add pages w/not much content (yet), howto_plugin, howto_customize

howto_plugin: how to write a Pants plugin

howto_customize: how to write a Pants customized for your org

So far, neither of these pages has much content. But I hope we'll
be better about capturing some of this info if we have a place to put it.

Reviewed at https://rbcommons.com/s/twitter/r/938/
Fix sloppy commit from https://rbcommons.com/s/twitter/r/901/

Testing Done:
Did a test publish from a Twitter monorepo.

Reviewed at https://rbcommons.com/s/twitter/r/940/
bad troubleshooting instructions: kicking 'em when they're down :-(
But that's what we're doing:

./pants -ldebug goal goals
Invalid command: -ldebug

Reviewed at https://rbcommons.com/s/twitter/r/953/
Refactor exceptions in build_file.py and build_file_parser.py to derive   from a common baseclass and eliminate throwing IOError. Catch errors from parse errors in the BUILD file and format   context around the exception.

Followon to https://rbcommons.com/s/twitter/r/929/

Refactor exceptions in build_file.py and build_file_parser.py to derive from a common baseclass and eliminate throwing IOError.

Revive error message that prints out alternatives to an incorrect build target.

Also, Catch exceptions from parse errors in the BUILD file and print some formatted context around the line of the file that failed.

Exception message: Error parsing /Users/zundel/Src/Pants/examples/src/java/com/pants/examples/hello/greet/BUILD:
    4: java_library(name = 'greet',
    5:   dependencies = [], # A more realistic example would depend on other libs,
    6:                      # but this "hello world" is pretty simple.
*   7:   sources = globs('*.java' && foo),
                                   ^ SyntaxError: invalid syntax (<string>, line 7)

    8:   provides = artifact(org='com.pants.examples',
    9:                     name='hello-greet',
   10:                     repo='build-support/ivy:public',),
   11: )

Testing Done:
ci passed at https://travis-ci.org/pantsbuild/pants/builds/33756154

Bugs closed: 537

Reviewed at https://rbcommons.com/s/twitter/r/954/
Add tests for junit_run._JUnitRunner; fix a regrsssion in Emma/Cobertura; refactor exclusive_groups prep to base_test.

- Add test for junit_run._JUnitRunner class (specially testing against future regression in https://github.com/pantsbuild/pants/issues/508).
- Fix a regression introduced in last fix that impacted Emma and Cobertura (reported by jayeye)
- Refactor populate_exclusive_groups into base_test so tests (test_jvm_run and test_junit_run and others) can reuse it.

Testing Done:
- Travis CI: https://travis-ci.org/jinfeng/jinfeng-pants-fork - CI passed.

- Local run:

$ PANTS_DEV=1 ./pants goal test tests::

============== test session starts ===============
                     platform darwin -- Python 2.6.8 -- py-1.4.23 -- pytest-2.5.2
                     plugins: cov, timeout
                     collected 500 items
                     ...
                     ...
                     tests/python/pants_test/backend/jvm/tasks/test_junit_run.py .
                     ...
                     ...
                     tests/python/pants_test/tasks/test_jvm_run.py .
                     ...
                     ...

                      490 passed, 5 skipped, 5 xfailed in 413.71 seconds

16:45:57 07:37     [junit]
16:45:57 07:37     [specs]
               SUCCESS

Bugs closed: 508

Reviewed at https://rbcommons.com/s/twitter/r/935/
Add IntelliJ content type to project Info. Add missing resources to targets.

This is required for intelliJ pants plugin to correctly mark the source, resource, test target and test resources.

The constants are defined here in IntelliJ
http://grepcode.com/file_/repository.grepcode.com/java/ext/com.jetbrains/intellij-idea/13.0.0/com/intellij/openapi/externalSystem/model/project/ExternalSystemSourceType.java/?v=source

Testing Done:
Locally ./pants tests/python/pants_test/tasks:depmap passes

https://travis-ci.org/pantsbuild/pants/builds/33880605

Reviewed at https://rbcommons.com/s/twitter/r/964/
jar_library docstring += dependencies

eagle-eyed J.I. Ioannidis noticed that our 3rdparty JVM docs show jar_library(dependencies=) but the BUILD dictionary doesn't (at least, I think that's what's going on)

until we fix https://github.com/pantsbuild/pants/issues/142, add doc for this param by hand, like an animal

Reviewed at https://rbcommons.com/s/twitter/r/960/
add include-excerpt feature to 'goal markdown'

Extend markdown syntax so that page authors can "include" a snippet from a real source file. Inspired by the way the Pants docs use Spinx's literalinclude http://sphinx-doc.org/markup/code.html#directive-literalinclude .

Added docs for it in src/python/pants/docs/page.rst

Exercise it in examples/src/java/com/pants/examples/hello/main/README.md

Testing Done:
Added test_markdown_to_html.py with a bunch of tests for the "excerpt a few lines" functionality, which has corner cases.

https://travis-ci.org/pantsbuild/pants/builds/33925158

Reviewed at https://rbcommons.com/s/twitter/r/949/
Move the jvm_compile/java IT from unit to IT.

Noticed this one very slow test when running the unit tests via :all which is not dead yet.

Testing Done:
CI went green here: https://travis-ci.org/pantsbuild/pants/builds/34067665

Bugs closed: 542

Reviewed at https://rbcommons.com/s/twitter/r/970/
Fixup engine test deps.

I was starting to look at coveralls and ran into some missing deps on my chosen victim test target, this fixes the deps up.

Testing Done:
```console
$ PANTS_PY_COVERAGE=1 ./pants goal test tests/python/pants_test/engine
$ PANTS_PY_COVERAGE=1 ./pants goal test tests/python/pants_test/engine:test_engine
$ PANTS_PY_COVERAGE=1 ./pants goal test tests/python/pants_test/engine:test_round_engine
$ COVERALLS_REPO_TOKEN=XYZ coveralls
```

https://coveralls.io/jobs/2668487

CI went green here: https://travis-ci.org/pantsbuild/pants/builds/34040483

Bugs closed: 369, 540

Reviewed at https://rbcommons.com/s/twitter/r/968/
Add a whitelist to jvm dependency analyzer

The whitelist allows big repos to reduce dependency issues while stopping any new from being introduced. You can whitelist the projects that currently have issues and make the dependency checks fatal. All projects with current issues will still be able to build but new issues will result in breaking builds.

Also it seems like the direct dependency check would always fatal if set to fatal, fixed that.

Testing Done:
Added two integration tests.

Reviewed at https://rbcommons.com/s/twitter/r/888/
Fixed source roots in project info for IntelliJ plugin in case of ScalaLibrary with java_sources

Testing Done:
CI is passing.

Reviewed at https://rbcommons.com/s/twitter/r/955/