Implement proper svn copy when a file is copied, moved or renamed

[email protected]
BUG=
TEST=A basic unit test verifies history is kept

Review URL: http://codereview.chromium.org/10310034

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@135651 0039d316-1c4b-4281-b951-d872f2087c98
2 files changed