un-capitalize 'w' in windows.h, winsock2.h.  This was a corner case that caused mingw linux cross-compile build to fail because of case sensitivity, but wasn't an issue for building on windows or linux native.
Merge pull request #16 from firepick-delta/upstream-merge

un-capitalize 'w' in windows.h, winsock2.h.  This was a corner case that...