Fetch fix for libsigc++12

[Bill Fenner]

Hi,

  I'd like to commit the following patch for libsigc++12, which
uses port groups to use the right subdirectory on each of the
MASTER_SITES.  Without this patch, it looks in the gnome subdirectory
on sourceforge, and vice versa.

Thanks,
  Bill

cvs diff: Diffing libsigc++12
Index: libsigc++12/Makefile
===================================================================
RCS file: /home/pcvs/ports/devel/libsigc++12/Makefile,v
retrieving revision 1.29
diff -u -r1.29 Makefile
--- libsigc++12/Makefile	15 Nov 2005 06:48:52 -0000	1.29
+++ libsigc++12/Makefile	26 Nov 2005 01:11:16 -0000
@@ -8,11 +8,12 @@
 PORTNAME=	libsigc++
 PORTVERSION=	1.2.7
 CATEGORIES=	devel
-MASTER_SITES=	${MASTER_SITE_GNOME} \
-		${MASTER_SITE_SOURCEFORGE}
-MASTER_SITE_SUBDIR=	sources/${PORTNAME}/1.2 \
-		libsigc
+MASTER_SITES=	${MASTER_SITE_GNOME:S/$/:gnome/} \
+		${MASTER_SITE_SOURCEFORGE:S/$/:sf/}
+MASTER_SITE_SUBDIR=	sources/${PORTNAME}/1.2/:gnome \
+		libsigc/:sf
 DIST_SUBDIR=	gnome2
+DISTFILES=	${DISTNAME}${EXTRACT_SUFX}:sf,gnome
 
 MAINTAINER=	gnome at FreeBSD.org
 COMMENT=	Callback Framework for C++