ENH:  remove obsolete code for python < 2.6 (we support >= 2.6)
ENH: do use @staticmethod (we are well beyond support of 2.4 now)
DOC: adjust docs in mytime to place docs into docstrings
Merge pull request #829 from yarikoptic/minimal_python2.6

ENH:  remove obsolete code for python < 2.6 (we support >= 2.6)