Converting Skia's SVNCheckout into GitCheckout.

Converting Skia's SVNCheckout into GitCheckout.

This CL should not be submitted till:
* Skia moves to Git completely.
* https://codereview.chromium.org/22794015/ is submitted.

CLs I tested this change with are: 
* https://codereview.chromium.org/22797006/ : Add whitespace in file1 
* https://codereview.chromium.org/22815013/ : Remove whitespace from file1 
* https://codereview.chromium.org/22867025/ : Add new files in directories 
* https://codereview.chromium.org/22901018/ : Edit file in directory and delete file in directory 
* https://codereview.chromium.org/22918014/ : Add, Delete and Modify 3 files 
* https://codereview.chromium.org/23360004/ : Add new files in new directories

[rmistry, 2013-08-23 16:25:50]

https://codereview.chromium.org/22859063/diff/5001/pending_manager.py
File pending_manager.py (right):

https://codereview.chromium.org/22859063/diff/5001/pending_manager.py#newcode467
pending_manager.py:467: viewvc_url = viewvc_url.rstrip('/')
The URL to view a revision in googlesource looks like:
https://skia.googlesource.com/skiabot-test/+/8a235155a4a0162551c8b6e047ed5ae6...

The entry in codereview.settings will look like:
VIEW_VC: https://skia.googlesource.com/skiabot-test/+/

We need to preserve the '/'.

[cmp_google, 2013-08-26 18:24:20]

+agable, xusydoc, ilevy, szager

[Mike Stip (use stip instead), 2013-08-28 22:58:13]

lgtm