Removed argument from remove_least_suitable_variant call.
Set permissions on installed files, especially Python modules.

Files are set to rw-r--r-- and directories and executable files to
rwx-r-xr-x.
Merge pull request #13 from BlackGinger/remove_least_suitable_variant_bug

Removed argument from remove_least_suitable_variant call.
Merge pull request #14 from BlackGinger/install_permissions

Set permissions on installed files, especially Python modules.
-fixed bug where valid bash in commands yaml was being rejected
Merge branch 'master' of github.com:nerdvegas/rez