just redirect preprocessed vm.c to mjit header [Bug #17787]

Not all preprocessors work with output option.

Author: nobu

template/Makefile.in

@@ -77,7 +77,7 @@ empty =
 CC_VERSION = @CC_VERSION@
 OUTFLAG = @OUTFLAG@$(empty)
 COUTFLAG = @COUTFLAG@$(empty)
-CPPOUTFLAG = $(COUTFLAG)
+CPPOUTFLAG = >
 ARCH_FLAG = @ARCH_FLAG@
 CFLAGS_NO_ARCH = @CFLAGS@
 CFLAGS = $(CFLAGS_NO_ARCH) $(ARCH_FLAG)