Removed hashutils functions without tests
Added hashutil module to docs index
Merge pull request #14524 from whiteinge/doc-hashutil

Add docs for the hashutil module
Switching the _get_virtual function to use pure python instead of a call to grep-available.
Merge pull request #14534 from garethgreenaway/2014.7_14426_apt_virtual_pkg

Switching the _get_virtual function to use pure python instead of a call to grep-available
Merge branch '2014.7' into develop