[ports/lang/mono] Respect PTHREAD_LIBS

[Norikatsu Shigemura]

Hi tmclaugh!

	I found a issue of not respect PTHREAD_LIBS.
	Please check following patch.

Index: Makefile
===================================================================
RCS file: /home/ncvs/ports/lang/mono/Makefile,v
retrieving revision 1.57
diff -u -r1.57 Makefile
--- Makefile	7 Oct 2006 17:39:36 -0000	1.57
+++ Makefile	9 Dec 2006 14:09:59 -0000
@@ -67,6 +67,8 @@
 		${WRKSRC}/mono/metadata/assembly.c
 	@${REINPLACE_CMD} -e 's|.so.0|.so|g' \
 		${WRKSRC}/configure
+	@${REINPLACE_CMD} -e 's|-pthread|${PTHREAD_LIBS}|g' \
+		${WRKSRC}/configure ${WRKSRC}/libgc/configure
 	@${REINPLACE_CMD} -e 's|%%CC%%|${CC}|g ; \
 		s|%%PTHREAD_LIBS%%|${PTHREAD_LIBS}|g' \
 		${WRKSRC}/mcs/tools/mkbundle/mkbundle.cs