Multiple improvements to windows bash integration.

Multiple improvements to windows bash integration.
  * `git bash` helper now will either:
    * launch an interactive bash prompt in the MinGW Terminal Emulator
    * launch a non-interactive bash shell if arguments are provided
  * `git bash` now includes python, python/Scripts and svn binaries in
    the PATH.
  * depot_tools' colorization now works in MinGW Terminal Emulator
  * batch scripts are now regenerated if any of them is missing.

R=agable@chromium.org, dnj@chromium.org, mmoss@chromium.org
BUG=598956
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=299616

[dnj, 2016-03-31 15:23:36]

This all lgtm. Hard to say if you've hit every tool / impact, so taking that on
faith a bit with a request that you triple-check :)

[agable, 2016-03-31 16:03:52]

LGTM as well.

[iannucci, 2016-03-31 18:59:46]

On 2016/03/31 at 16:03:52, agable wrote:
> LGTM as well.

Waiting on this until after crbug.com/599512 is settled

[iannucci, 2016-04-01 01:02:44]

Description was changed from

==========
Multiple improvements to windows bash integration.
  * `git bash` helper now will either:
    * launch an interactive bash prompt in the MinGW Terminal Emulator
    * launch a non-interactive bash shell if arguments are provided
  * `git bash` now includes python, python/Scripts and svn binaries in
    the PATH.
  * depot_tools' colorization now works in MinGW Terminal Emulator
  * batch scripts are now regenerated if any of them is missing.

R=agable@chromium.org, dnj@chromium.org, mmoss@chromium.org
BUG=598956
==========

to

==========
Multiple improvements to windows bash integration.
  * `git bash` helper now will either:
    * launch an interactive bash prompt in the MinGW Terminal Emulator
    * launch a non-interactive bash shell if arguments are provided
  * `git bash` now includes python, python/Scripts and svn binaries in
    the PATH.
  * depot_tools' colorization now works in MinGW Terminal Emulator
  * batch scripts are now regenerated if any of them is missing.

R=agable@chromium.org, dnj@chromium.org, mmoss@chromium.org
BUG=598956

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=299616
==========

[iannucci, 2016-04-01 01:02:45]

Committed patchset #2 (id:20001) manually as 299616.