BUG: Fix so aoslib can compile with mingw

Fixed temp_of_te.c so that file can compile with mingw on Windows.
TST: removed Python 2.5 from Travi-CI tests

Python 2.5 is no longer supported by Travis-CI.
MAINT: comment added to temp_of_te.c
Merge pull request #13 from jjhelmus/master

BUG: Fix so aoslib can compile with mingw