git-sync-deps - handle symbolic links to directories

NOTRY=true
R=mtklein@google.com, borenet@google.com

Author: halcanary@google.com

Review URL: https://codereview.chromium.org/258053005

git-svn-id: http://skia.googlecode.com/svn/trunk@14396 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed