Fixed some mistakes in the CMake module for float types.
Fixed some debug messages.
Improved the CMake check for float/double format. (Intel compiler support)
Merge pull request #414 from TsudaKageyu/fix-floattest

Fixed some mistakes in the CMake module for float types.
Merge pull request #418 from TsudaKageyu/debug-msg

Fixed some debug messages.
Replaced codecvt with Win32 API.

Conflicts:
	taglib/toolkit/tstring.cpp
Replaced codecvt with Win32 API.