MAINT: remove obsolete version checks for < py26.
TST: skip test comparing infs that fails for numpy 1.5.x
DEP: remove deprecated functions in scipy.stats (glm, oneway, cmedian).
MAINT: fix download URL in setup metadata.

This is displayed on PyPi, and was pointing to the 0.11.0 release.
Changing it to not point to a page with direct links to installers is
OK, because pip and easy_install don't know anyway what to do with
those installers.

Has been discussed on mailing list.

[ci skip]
TST: skip test that doesn't work because of buggy object arrays in np 1.5.1
Merge pull request #3074 from rgommers/maint

MAINT: some maintenance work

- remove obsolete version checks
- fix test failure
- remove deprecated stats functions
- update download URL