Added formula for confget

The tool provides a method for shell scripts to read INI-style config files.
Added head option to john the ripper
Added formula for john front-end, johnny.app

Formula for johnny.app, a simple GUI frontend for john-the-ripper.
Added formula for BSD mandoc.
Merge branch 'mdocml'

* mdocml:
  Added formula for BSD mandoc.
Merge branch 'johnny'

* johnny:
  Added formula for john front-end, johnny.app
Merge branch 'confget'

* confget:
  Added formula for confget
Updated clang fails_with version
Merge branch 'john'

* john:
  Updated clang fails_with version
  Added head option to john the ripper
Added formula for utility, "symlinks"