Make the .pc file rules depend on the Makefile so that when rebuilding

the tree with MKUPDATE=yes set after an atf upgrade, the .pc files get
the correct version in them.

Suggested by njoly@ in private mail.

external/bsd/atf/usr.bin/atf-run/Makefile

@@ -1,4 +1,4 @@
-# $NetBSD: Makefile,v 1.4 2010/05/08 08:12:35 jmmv Exp $
+# $NetBSD: Makefile,v 1.5 2010/05/08 16:57:24 jmmv Exp $
 
 .include <bsd.own.mk>
 
@@ -32,7 +32,7 @@ FILESDIR_atf-c.pc=	/usr/lib/pkgconfig
 FILESDIR_atf-c++.pc=	/usr/lib/pkgconfig
 
 realall: atf-c.pc
-atf-c.pc: atf-c.pc.in
+atf-c.pc: Makefile atf-c.pc.in
 	${TOOL_SED} -e 's,__ATF_VERSION__,0.8,g' \
 	    -e 's,__CC__,gcc,g' \
 	    -e 's,__INCLUDEDIR__,/usr/include,g' \
@@ -41,7 +41,7 @@ atf-c.pc: atf-c.pc.in
 CLEANFILES+=	atf-c.pc
 
 realall: atf-c++.pc
-atf-c++.pc: atf-c++.pc.in
+atf-c++.pc: Makefile atf-c++.pc.in
 	${TOOL_SED} -e 's,__ATF_VERSION__,0.8,g' \
 	    -e 's,__CXX__,g++,g' \
 	    -e 's,__INCLUDEDIR__,/usr/include,g' \