added internal-use-only subpackage _parsers for organizational purposes
Revert "added internal-use-only subpackage _parsers for organizational purposes"

This reverts commit 59d4d2818177dc8361c126936214ce1e3c44b528.
created new internal-use-only subpackage _parsers for organizational purposes
moved arfile.py and debfile.py into _parsers and abstracted the loading method of ArFile into a new base calss FileLoader
added new parser releasefile; wrote parse routine for ReleaseFile to parse (wait for it) Release files
nothing yet
changed import path; cleaned up formatting slightly
added new testdata content - a Release and Release.gpg file from Ubuntu precise, a symlink to example_1.0-1_all.deb, and the output of `dpkg --contents example_1.0-1_all.deb`
added a symlink to example_1.0-1_all.deb for more complete print testing
moved util up to debutils
a little bit of cleanup, updated test_contents to reflect the changes in example_1.0-1_all.deb, added test_print_contents to test the __str__ magic
added new subpackage Repo to debutils
added new test harness test_ReleaseFile to test debutils._parsers.releasefile.ReleaseFile
added stub test harness test_ReleaseGPGFile for testing debutils._parsers.releasefile.ReleaseGPGFile
formatting; added debutils.Repo and debutils._parsers to packages