Fix a Clang compilation error.

The issue here is that GLM_DEPRECATED, GL_ALIGN, etc is being left undefined with the Clang build.
Merge pull request #47 from mackron/Clang-Compile-Fix

Clang compilation error.
Fixed conflict
Updated readme for GLM 0.9.4.3
Updated date
Fixed issue #48
Resolve issue #39, exp, squad and intermediate functions
Updated readme
Fixed API for euclian, only need a vec2 parameter
Updated readme
Clarifies the license applying on the manual and added a docx copy of the manual to the source
Added file headers so that the files are no longer empty. #57
Resolved issue #58
Fixed isnan and isinf on Android with Clang, issue #54
Added mix function tests
Added mix function tests
Added more mix function tests
Autodetect C++ version using __cplusplus value, issue #62
Fixed mix function for bool and bvec* type third parameter, issue #59
Updated readme