Windows: Fix the SqueakCOnsole VMs. They were missing initialization of

vmOptions and imageOptions along the main/sqMain path.
SOme minor tweaks to the 64-bit MSVC Makefiles to get the VM to compile under
Clang-cl.exe (v 10).

build.win64x64/common/Makefile.msvc.flags

@@ -57,14 +57,15 @@ undefine Clang
 undefine MSVC
 CLANG_ADAPT:=-fmsc-version=1916 # as reported by boost for MSVC Community 2017
 else
-$(info neither CLang nor Clang/C2 found using MSVC)
+$(info neither Clang nor Clang/C2 found using MSVC)
 override TOOLPREFIX:="$(VCToolsInstallDir)bin/HostX64/x64/"
 MSVC:=MSVC
 undefine Clang
 undefine ClangC2
 CC:=$(TOOLPREFIX)cl.exe -nologo
 endif
 $(info CC=$(CC))
+AS:=ml64
 
 
 ifeq ($(WindowsSdkDir),)

build.win64x64/common/Makefile.msvc.msvc.rules

@@ -45,3 +45,9 @@ $(OBJDIR)/%.o: %.cpp
 
 .c.dep:
 	$(CC) -M -o $(notdir $@) $(CFLAGS) $(INCLUDES) $(DEFS) -c $<
+
+.asm.o:
+	$(AS) /Fo$(OBJDIR)/$@ $(DEFS) -c $<
+
+$(OBJDIR)/%.o: %.asm
+	$(AS) /Fo$@ $(DEFS) -c $<

build.win64x64/common/Makefile.msvc.plugin

@@ -120,11 +120,7 @@ $(PLUGINLIB): $(VMDIR) $(OBJDIR) $(LIBOBJ)
 	-$(RM) $(PLUGINLIB)
 	$(LIBRARIAN) $(LIBOBJ) $(EXTRALIBS) -out:$(subst /,\\,$(PLUGINLIB))
 
-PLUGINDLL_LIBS:=WinMM.lib ole32.lib dsound.lib msdmo.lib kernel32.lib
-
-ifdef Clang
-PLUGINDLL_LIBS+=libconcrt.lib /NODEFAULTLIB:msvcrt.lib
-endif
+PLUGINDLL_LIBS:=WinMM.lib ole32.lib dsound.lib msdmo.lib kernel32.lib /NODEFAULTLIB:libc /NODEFAULTLIB:libcmt /DEFAULTLIB:msvcrt
 
 $(PLUGINDLL): $(VMDIR) $(OBJDIR) $(LIBOBJ)
 	$(LD) $(VMLIB) $(LDFLAGS) -DLL $(LIBOBJ) $(PLUGINDLL_LIBS) $(EXTRALIBS) \

platforms/win32/vm/sqWin32Main.c

@@ -1858,6 +1858,8 @@ main(int argc, char *argv[])
 
   SQ_LAUNCH_DROP = RegisterWindowMessage(TEXT("SQUEAK_LAUNCH_DROP"));
 
+  vmOptions = calloc(argc + 1, sizeof(char *));
+  imageOptions = calloc(argc + 1, sizeof(char *));
   /* start the non-service version */
   sqMain(argc, argv);
   return 0;