Add a suppressions file for leak sanitizer.

Add a suppressions file for leak sanitizer.

LeakSanitizer is built into AddressSanitizer, and runs with no extra speed
penalty.  Most interestingly, it's got a lock-free allocator, so it doesn't
bottleneck threaded code.

This file is enough to supress all leak warnings except from the Nvidia driver
on my desktop for tests and dm.  Looks like lsan doesn't or can't pay attention
to leaked globals (-fno-common doesn't affect this).

BUG=skia:

Committed: http://code.google.com/p/skia/source/detail?r=13153

[robertphillips, 2014-01-23 18:23:36]

lgtm

[commit-bot: I haz the power, 2014-01-23 18:30:16]

CQ is trying da patch. Follow status at
https://skia-tree-status.appspot.com/cq/mtklein@google.com/145033010/1

[commit-bot: I haz the power, 2014-01-23 18:42:36]

Change committed as 13153