Allow more options for setting boolean flag values in SkFlags.

Now booleans can be set using
--boolean=true or --boolean true (as well as other options).

Review URL: https://codereview.chromium.org/12961003

git-svn-id: http://skia.googlecode.com/svn/trunk@8285 2bbb7eff-a529-9590-31e7-b0007b416f81
2 files changed