No longer support MSVC 2k12: and lose bug workarounds only needed for that compiler (qCompilerAndStdLib_Supports_strtoll/qCompilerAndStdLib_Supports_ExplicitlyDeletedSpecialMembers/qCompilerAndStdLib_Supports_ExplicitConversionOperators/qCompilerAndStdLib_Supports_isnan/qCompilerAndStdLib_Supports_varadic_templates/qCompilerAndStdLib_Supports_ExplicitlyDeletedSpecialMembers; and stop using macros NO_DEFAULT_CONSTRUACTOR/NO_COPY_CONSTRUCTOR/NO_ASSIGNMENT_OPERATOR (still defined by deprecated)