[ports/audio/polypaudio] not respect PTHREAD_LIBS issue

[Norikatsu Shigemura]

Hi gnome maintainer!

	This port has a 'not respect PTHREAD_LIBS' issue.  Can you please
	investigate and/or validate following patch?  By the way, I'm
	validating ports which have this issue on no libpthread.* environment.
	So you won't get this error, and notice it.

Index: Makefile
===================================================================
RCS file: /home/pcvs/ports/audio/polypaudio/Makefile,v
retrieving revision 1.11
diff -u -r1.11 Makefile
--- Makefile	1 Feb 2007 02:41:19 -0000	1.11
+++ Makefile	25 Mar 2007 12:58:15 -0000
@@ -27,6 +27,8 @@
 USE_GETOPT_LONG=yes
 CONFIGURE_ENV=	CPPFLAGS="-I${LOCALBASE}/include" \
 		LDFLAGS="-L${LOCALBASE}/lib" \
+		PTHREAD_CFLAGS="${PTHREAD_CFLAGS}" \
+		PTHREAD_LIBS="${PTHREAD_LIBS}" \
 		LIBS="-lm"
 
 PLIST_SUB=	VERSION=${PORTVERSION}