cisco/openh264 — pull request #392 by mstorsjo (2014-03-03 09:17:17+00:00)
Title: Unify ifdef conditions related to threading code

The two different variants of the threadlib basically are
win32 and unix - use _WIN32 to check for this consistently,
instead of occasionally using __GNUC__ to enable the unix
codepath. (__GNUC__ is also defined on mingw, which still is
a windows platform and should use the _WIN32 code.)