change args order; remove keyid/longkeyid args; minor format fixes
improve fetch seed
minor fixes
fix release arg
move load/fetch seed behind seedhandler
improve listseedfiles
refine addseeds
small fixes in listkey
Merge pull request #12 from gentoo/week3_refactoring_gkey

Gkey refactoring part 1
gkeys.log: Isolate file-handler code in the logpath branch

There's no need for this variable if logpath isn't set, so remove the
global variable and external references.

Also downcase it to the more Pythonic 'file_handler'.  PEP8 doesn't
even recognize a 'Sentence_case' naming style [1].

[1]: http://legacy.python.org/dev/peps/pep-0008/#descriptive-naming-styles