Disable MSVC warning 4577 in headersclean

This warning is added in MSVC 2015 and is printed when we use noexcept
in modules we turned exceptions off.

Task-number: QTBUG-59645
Change-Id: Id92f4a61915b49ddaee6fffd14ae3b943ccd2bce
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>

mkspecs/features/qt_module_headers.prf

@@ -252,6 +252,11 @@ headersclean:!internal_module {
         # -Za enables strict standards behavior, but we can't add it because
         # <windows.h> and <GL.h> violate the standards.
         hcleanFLAGS = -WX -W3 -wd4180 -wd4458
+
+        # MSVC 2015 (compiler version 19.0):
+        # 4577: 'noexcept' used with no exception handling mode specified; termination on exception is not guaranteed. Specify /EHsc
+        greaterThan(QMAKE_MSC_VER, 18): hcleanFLAGS += -wd4577
+
         hcleanCOMMAND = $$QMAKE_CXX -c $(CXXFLAGS) $$hcleanFLAGS $(INCPATH) $$hcleanDEFS -FI${QMAKE_FILE_IN} -Fo${QMAKE_FILE_OUT} \
                         $$[QT_INSTALL_DATA/src]/mkspecs/features/data/dummy.cpp
     }