Disable qmake default optimization flags

qmake overrides the user-defined optimization flags for some reason.

Author: sjoelund

OMEdit/OMEditGUI/OMEdit.config.in

@@ -9,6 +9,9 @@ OPENMODELICAHOME = @OPENMODELICAHOME@
 LIBS += -L @OPENMODELICAHOME@/lib/@host_short@/omc -lOMPlot -lomqwt -lfmilib_shared -L../OMEditGUI/Debugger/Parser -lGDBMIParser -lomantlr3 @RPATH_QMAKE@ -lOpenModelicaCompiler -lOpenModelicaRuntimeC -lomcgc -L@OMBUILDDIR@/lib/@host_short@/omc @LIBOSG@
 INCLUDEPATH += @OPENMODELICAHOME@/include/omc/scripting-API @OPENMODELICAHOME@/include/omplot @OPENMODELICAHOME@/include/omplot/qwt @OPENMODELICAHOME@/include/@host_short@/omc/antlr3 @OPENMODELICAHOME@/include/omc/c ../../qjson-0.8.1/build/include
 
+QMAKE_CXXFLAGS_RELEASE -= -O1
+QMAKE_CXXFLAGS_RELEASE -= -O2
+
 QMAKE_CFLAGS = @CFLAGS@ @CPPFLAGS@
 QMAKE_CXXFLAGS = @CXXFLAGS@ @CPPFLAGS@
 QMAKE_LFLAGS += @LDFLAGS@