add wildcard test name matching to gm

add wildcard test name matching to gm and bench.

This adds the same set of options in unit tests, i.e:

--match [~][^]match[$] [~][^]match[$] ...
~ causes a matching test to always be skipped
^ requires the start of the test to match
$ requires the end of the test to match
^ and $ requires an exact match

If a test does not match any list entry,
it is skipped unless some list entry starts with ~
Committed: https://code.google.com/p/skia/source/detail?r=9096

[bsalomon, 2013-05-10 13:57:57]

lgtm

[caryclark, 2013-05-10 14:59:34]

added bench as well

[bsalomon, 2013-05-10 15:12:10]

On 2013/05/10 14:59:34, caryclark wrote:
> added bench as well

looks even better to me

[caryclark, 2013-05-10 15:16:17]

Committed patchset #3 manually as r9096 (presubmit successful).