[build] various MoarVM fixes

Author: moritz

Configure.pl

@@ -203,7 +203,7 @@
         $config{'make'}   = $^O eq 'MSWin32' ? 'nmake' : 'make';
         $config{'runner'} = $^O eq 'MSWin32' ? 'nqp.bat' : 'nqp';
         fill_template_file(
-            'tools/build/Makefile-common.in',
+            'tools/build/Makefile-Moar.in',
             $MAKEFILE,
             %config,
         );

tools/build/Makefile-Moar.in

@@ -74,7 +74,7 @@ m-install: m-all
 M_CLEANUPS: *.moarvm  gen/moar/*
 
 m-clean:
-	$(PERL) -MExtUtils::Command -e $(M_CLEANUPS)
+	$(RM_RF) $(M_CLEANUPS)
 
 $(M_STAGE1): $(M_STAGE1_OUTPUT)
 

tools/build/Makefile-common.in

@@ -91,6 +91,7 @@ PERL          = @perl@
 MKPATH        = $(PERL) -MExtUtils::Command -e mkpath
 CHMOD         = $(PERL) -MExtUtils::Command -e chmod
 CP            = $(PERL) -MExtUtils::Command -e cp
+RM_RF         = $(PERL) -MExtUtils::Command -e rm_rf
 
 PREFIX          = $(DESTDIR)@prefix@
 BIN_DIR         = $(PREFIX)/bin