pkgwat: further package adjustments

- Remove Gemfile and Rakefile in %prep
- Delete extraneous boilerplate comment about C extensions
- Move README.md to main package
- Exclude test suite and Rakefile from binary packages

Also delete the unused debugger patch from Git.
pkgwat: whitespace fixes

Remove the trailing whitespace from pkgwat spec file.
pkgwat: clean up Summary and Description
pkgwat: remove thor requirement

Thor is not a valid requirement. Fixed upstream at
https://github.com/daviddavis/pkgwat/pull/19
Merge pull request #8 from ktdreyer/pkgwat-adjustments

pkgwat: further package adjustments