Updated perforce to 2014.1.815009

Fixed sha for perforce

For perforce, fixed version as it always show up in `brew outdated`
Merge branch 'master' of https://github.com/vishr/homebrew-binary

* 'master' of https://github.com/vishr/homebrew-binary:
  For perforce, fixed version as it always show up in `brew outdated`
  Fixed sha for perforce
  Updated perforce to 2014.1.815009