[monodoc]: Use shell script for jay to support parallel builds.

mcs/class/monodoc/Makefile

@@ -77,6 +77,7 @@ RESOURCE_FILES = \
 	$(IMAGES)
 
 EXTRA_DISTFILES = \
+	jay.sh \
 	monodoc.dll.config.in   \
 	$(RESOURCE_FILES)   \
 	Monodoc.Ecma/EcmaUrlParser.jay \
@@ -139,8 +140,8 @@ dist-local: Monodoc.Ecma/EcmaUrlParser.cs
 $(the_lib).config: Makefile monodoc.dll.config.in
 	sed 's,@monodoc_refdir@,$(mono_libdir)/monodoc,g' monodoc.dll.config.in > $@
 
-Monodoc.Ecma/EcmaUrlParser.cs: Monodoc.Ecma/EcmaUrlParser.jay $(topdir)/jay/skeleton.cs
-	$(topdir)/jay/jay $(JAY_FLAGS) < $(topdir)/jay/skeleton.cs $< > jay-tmp.out && mv jay-tmp.out $@
+Monodoc.Ecma/EcmaUrlParser.cs: Monodoc.Ecma/EcmaUrlParser.jay $(topdir)/jay/skeleton.cs jay.sh
+	$(topdir)/$(thisdir)/jay.sh $(topdir) $< $@ $(JAY_FLAGS)
 
 parser.exe: Monodoc.Ecma/EcmaUrlParser.cs Monodoc.Ecma/EcmaUrlTokenizer.cs Monodoc.Ecma/EcmaUrlParserDriver.cs Monodoc.Ecma/EcmaDesc.cs
 	mcs /out:$@ /debug $^

mcs/class/monodoc/jay.sh

@@ -0,0 +1,10 @@
+#!/bin/sh
+
+TOPDIR=$1
+INPUT=$2
+OUTPUT=$3
+FLAGS=$4
+
+TEMPFILE=jay-tmp-$RANDOM.out
+
+$TOPDIR/jay/jay $FLAGS < $TOPDIR/jay/skeleton.cs $INPUT > $TEMPFILE && mv $TEMPFILE $OUTPUT