updated comments
Merge branch '0.9.5' of https://github.com/g-truc/glm into 0.9.5
Fixed missing precision aualifier in template

Fixed missing precision aualifier in template to remove compiler
errors. (AppleClang - Xcode 5)
fixed: printf -> std::printf and missing include
fixed: commented unknown structure member (gcc4.8.2,f19,x86_64)
added: quat::op+=(quat) and quat::op*=(quat)
fixed: type (GLM_SWIZZL vs GLM_SWIZZLE)
added: op<< for glm types
Merge pull request #136 from epreston/fix-missing-template-params

Fixed missing precision qualifier in template
Merge pull request #139 from regnirpsj/0.9.5

0.9.5: minor compile fixes, op+=/op*= for glm::quat, op<< for glm types
Fixed inline
Merge branch '0.9.5' of https://github.com/g-truc/glm into 0.9.5
Remove includes of deleted half_float.hpp
Fixed glm::multiple warning with unsigned int genType
Fixed GTX_io test
Merge pull request #142 from bernstein/0.9.5

Remove includes of deleted half_float.hpp
Fixed /arch:SSE3 warnings, no supported by VC
Merge branch '0.9.5' of https://github.com/g-truc/glm into 0.9.5
Fixed GTX_mixed_product build
Removed useless GTX extensions