shells/bash-devel

[Emanuel Haupt]

I've added shells/bash-devel in order to have a more up to date version
of shells/bash. This port is originally a clone of shells/bash with the
following changes:

- Updated to 4.2.42
- Converted to OPTIONSng

There are still a few things I like to change, such as:

- Remove possibly unused WITH_ / WITHOUT_ knobs that were never part of
  OPTIONS
- Remove possible cruft such as FAQ, WITH_INCLUDED_FAQ, 
- Introduce new OPTIONS
- Remove possibly unneeded OPTIONS
- Modernize style, reformat/indent

I am open for suggestions or even better patches/PRs!

Thanks,
Emanuel