Use 'git svn find-rev' in git-svnrevert instead of shell script fu.
Use 'git svn find-rev' in git-svnrevert instead of shell script fu.

Thanks Chandler!

git-svn-id: a4a6f32337ebd29ad4763b423022f00f68d1c7b7@180592 91177308-0d34-0410-b5e6-96231b3b80d8

lodyagin/bare_cxx,lodyagin/bare_cxx,lodyagin/bare_cxx,lodyagin/bare_cxx,lodyagin/bare_cxx