fix a couple of missing deps

Testing Done:
./pants tests/python/pants_test:all

It passes. With this change, it passes even if I recently cleaned.

Reviewed at https://rbcommons.com/s/twitter/r/471/
Fix some nits.
Upgrade jar-tool to 0.1.7

This picks up a fix that prevented clean cross-fs
jar copies due to unclosed temprorary files.

Testing Done:
# observed jar-tool 0.1.7 ivy download and subsequent jarring (not cross-fs) work:
$ PANTS_DEV=1 ./pants goal clean-all killserver server
$ PANTS_DEV=1 ./pants goal binary bundle src/{java,scala}/::

Bugs closed: 198

Reviewed at https://rbcommons.com/s/twitter/r/475/
get doc gen working post-backend-refactor

'goal builddict' runs instead of crashing, yay.
re-enabled builddict tests; took out the "len(usual_symbols)>20" test; couldn't figure out an easy way to get the "usual symbols". No big loss; I don't think that test ever found an error.

Added a hardwired entry for the now-gone "egg" in BUILD dictionary: "If your pants is old, there might be `egg` in there." Sounds like instructions for someone wearing an outfit from the Owl Thrift Shop, but there you go.

gen.py grabbed code from "tasks" and "targets" dir. But now there's more than one of those dirs, so check 'em all.

Testing Done:
./pants tests/python/pants_test:all

./build-support/bin/publish_docs.sh -o
  compare list of entries in an old and new BUILD Dictionary (and thus notice "egg" went bye-bye)

Reviewed at https://rbcommons.com/s/twitter/r/463/
Fixup python integration tests under ci.

Release the lock for the pytest task as is done for the junit task
and other code-run tasks (run, repl).

Convert ci to use the pytest task (test goal) and eliminate dup
runs of python tests by restricting the jvm tests to just the
jvm targets.

This change also adds pass-through args for pytest to aid debugging
tests and otherwise running them.  When using this to un-suppress
pytest output, a second form of test blocking was uncovered with
the stdin 'yes' plumbing not working properly.  As a result this
change tweaks the IT in question to use a more robust method of stdin
piping to the pants subprocess.

Testing Done:
1st reproed IT test lock under the test goal (worked find under old build command test runner).

Python tests run once (normal and IT), and they no longer block.
$ ./build-support/bin/ci.sh

Also confirmed the it works with output un-suppressed:
$ PANTS_DEV=1 ./pants goal test tests/python/pants_test:integration --test-pytest-options="-v -s"
...
12:56:36 00:01   [test]
12:56:36 00:01     [pytest]
12:56:36 00:01       [run]
                     *** Running pants in dev mode from /home/jsirois/dev/3rdparty/jsirois-pantsbuild-pants2/src/python/pants/bin/pants_exe.py ***
                     ============== test session starts ===============
                     platform linux3 -- Python 2.6.8 -- py-1.4.20 -- pytest-2.5.2 -- /home/jsirois/dev/3rdparty/pyenv/versions/2.6.8/bin/python
                     plugins: cov, timeout
                     collected 2 items

                     tests/python/pants_test/tasks/test_jar_publish_integration.py:25: JarPublishIntegrationTest.test_java_publish Loading pants backends from source

                     12:56:38 00:00 [main]
                                    See a report at: http://localhost:37586/run/pants_run_2014_06_10_12_56_38_23
...
                     12:56:44 00:06     [jar_create_publish]
                     12:56:44 00:06       [jar-create]....
                     12:56:46 00:08     [publish]Skipping check for a clean jsirois/travis/it_unblock in test mode.

                     Changes for com.pants.examples#hello-greet since 0.0.0 @ None:

                     commit 7c56621a9c4e8a3aca2bee567d77e5a13b6f8a3b
                     Author: Benjy <benjy@foursquare.com>
                     Date:   Tue Apr 1 02:34:30 2014 +0000

                         Introduce java examples.

                      .../hello/greet/Greeting.java    | 13 ++++++++++
                      1 file changed, 13 insertions(+)

                     12:56:46 00:08       [jar-publish]
                                    Waiting for background workers to finish.
                                    SUCCESS*** Running pants in dev mode from /home/jsirois/dev/3rdparty/jsirois-pantsbuild-pants2/src/python/pants/bin/pants_exe.py ***

                     PASSED

...

Bugs closed: 201

Reviewed at https://rbcommons.com/s/twitter/r/478/
doc: add/improve "Implemented by..." in generated docs

I didn't have a great answer for: "If this is intended only for BUILD file authors, then stick with jar; otherwise you might want to mention both [jar and pants.backend...JarDependency] for clarity." Here's an attempt to rectify that: With this change, the generated doc for "jar" mentions "JarDependency". And other thingies similarly mention where they're implemented.

This change adds lines to most of BUILD Dictionary items a la
  Implemented by pants.backend.python.targets.python_tests.PythonTests
...so if someone gives you a python_tests and you're a new Pants developer, you can find the underlying code without having to grep all over.

Also, where the Goals reference used to say
  Implemented by MinimalCover
...with this change it says
  Implemented by pants.backend.core.tasks.minimal_cover.MinimalCover

Testing Done:
./build-support/bin/publish_docs.sh -o

./pants tests/python/pants_test:all

Bugs closed: 187

Reviewed at https://rbcommons.com/s/twitter/r/479/
Fixup test_targets_help.py and link back into :all.

Testing Done:
$ PANTS_DEV=1 ./pants goal test tests/python/pants_test/tasks/:targets_help
...
23:43:15 00:01       [jvm-compilers]
23:43:15 00:01   [test]
23:43:15 00:01     [pytest]
23:43:15 00:01       [run]
                     ============== test session starts ===============
                     platform linux3 -- Python 2.6.8 -- py-1.4.20 -- pytest-2.5.2
                     plugins: cov, timeout
                     collected 2 items

                     tests/python/pants_test/tasks/test_targets_help.py ..

                     ============ 2 passed in 0.32 seconds ============

23:43:22 00:08     [junit]
23:43:22 00:08     [specs]
               SUCCESS

Bugs closed: 203

Reviewed at https://rbcommons.com/s/twitter/r/483/
Remove unnecessary print to stdout

This breaks scripts that rely on parsing the stdout of various pants
commands.

Testing Done:
Works internally.  Change is extremely trivial.

Reviewed at https://rbcommons.com/s/twitter/r/486/
Some minor regressions in python test targets/builder

Fix a minor regression in the PythonTest interface (it used to take a timeout
param).  Also use a more recent version of coverage for python tests.

Testing Done:
CI passes

Reviewed at https://rbcommons.com/s/twitter/r/480/
Merge branch 'master' of https://github.com/pantsbuild/pants into tien/pants-protos

* 'master' of https://github.com/pantsbuild/pants:
  Some minor regressions in python test targets/builder
  Remove unnecessary print to stdout
  Fixup test_targets_help.py and link back into :all.
  doc: add/improve "Implemented by..." in generated docs
  Fixup python integration tests under ci.
  get doc gen working post-backend-refactor
  Upgrade jar-tool to 0.1.7
  Fix some nits.
  fix a couple of missing deps