better fix for Windows compilation

- use gcc instead of g++
- use -Wl,-Bstatic -lstdc++ -Wl,-Bdynamic instead of -static-stdc++

Belonging to [master]:
  - OpenModelica/OMCompiler#2570

Compiler/Template/CodegenC.tpl

@@ -5787,7 +5787,7 @@ case SIMCODE(modelInfo=MODELINFO(varInfo=varInfo as VARINFO(__)), delayedExps=DE
   # Makefile generated by OpenModelica
 
   # Simulations use -O3 by default
-  CC=<%if boolOr(boolOr(Flags.isSet(Flags.PARMODAUTO),acceptParModelicaGrammar()), boolOr(stringEq(makefileParams.platform, "win32"),stringEq(makefileParams.platform, "win64"))) then 'g++' else '<%makefileParams.ccompiler%>'%>
+  CC=<%if boolOr(Flags.isSet(Flags.PARMODAUTO),acceptParModelicaGrammar()) then 'g++' else '<%makefileParams.ccompiler%>'%>
   CXX=<%makefileParams.cxxcompiler%>
   LINK=<%makefileParams.linker%>
   EXEEXT=<%makefileParams.exeext%>

Compiler/runtime/omc_config.h

@@ -98,7 +98,7 @@
 /* adrpo: add -loleaut32 as is used by ExternalMedia */
 #define BASIC_LDFLAGS_RT " -lomcgc -lexpat -lregex -static-libgcc -luuid -loleaut32 -lole32 -limagehlp -lws2_32 -llis -lumfpack -lklu -lcolamd -lbtf -lamd -lsundials_idas -lsundials_kinsol -lsundials_nvecserial -lipopt -lcoinmumps -Wl,-Bstatic -lpthread -Wl,-Bdynamic -lm -lgfortranbegin -lgfortran -lmingw32 -lgcc_eh -lmoldname -lmingwex -lmsvcrt -luser32 -lkernel32 -ladvapi32 -lshell32 -lopenblas -lcminpack"
 #define LDFLAGS_RT " -lOpenModelicaRuntimeC" BASIC_LDFLAGS_RT
-#define LDFLAGS_RT_SIM " -lSimulationRuntimeC" BASIC_LDFLAGS_RT " -lwsock32 -static-libstdc++"
+#define LDFLAGS_RT_SIM " -lSimulationRuntimeC" BASIC_LDFLAGS_RT " -lwsock32 -Wl,-Bstatic -lstdc++ -Wl,-Bdynamic"
 #define LDFLAGS_RT_SOURCE_FMU " -lregex -static-libgcc -Wl,-Bstatic -lpthread -Wl,-Bdynamic -lm -lgfortranbegin -lgfortran -lmingw32 -lgcc_eh -lmoldname -lmingwex -lmsvcrt -luser32 -lkernel32 -ladvapi32 -lshell32 -limagehlp -lopenblas -lz -lhdf5"
 #define CONFIG_EXE_EXT ".exe"
 #define CONFIG_DLL_EXT ".dll"