Add MD5 support when syncing debug files and option to just start gdbserver

R=borenet@google.com

Review URL: https://codereview.chromium.org/17910006

git-svn-id: http://skia.googlecode.com/svn/trunk@9791 2bbb7eff-a529-9590-31e7-b0007b416f81
4 files changed