renamed qCompilerAndStdLib_HasFirstTimeUseFloatingPointBug to qCompilerAndStdLib_HasFirstTimeUsePerTranslationUnitFloatingPointBug and FILE_SCOPE_BEFORE_MAIN_MSVC_FLOATING_POINT_BWA() to FILE_SCOPE_TOP_OF_TRANSLATION_UNIT_MSVC_FLOATING_POINT_BWA() and commented on relationship to qCompilerAndStdLib_Supports_VarDateFromStrOnFirstTry