nawk: switch this to alternatives for 'awk'.

srcpkgs/nawk/template

@@ -1,7 +1,7 @@
 # Template file for 'nawk'
 pkgname=nawk
 version=20121220
-revision=1
+revision=2
 create_wrksrc=yes
 hostmakedepends="bison"
 short_desc="The one, true implementation of AWK"
@@ -11,8 +11,9 @@ homepage="http://cm.bell-labs.com/who/bwk/"
 distfiles="http://www.cs.princeton.edu/~bwk/btl.mirror/awk.tar.gz"
 checksum=8dc092165c5a4e1449f964286483d06d0dbfba4b0bd003cb5dab30de8f6d9b83
 
-provides="awk-0_1"
-replaces="awk>=0"
+alternatives="
+ awk:/usr/bin/awk:/usr/bin/nawk
+ awk:/usr/share/man/man1/awk.1:/usr/share/man/man1/nawk.1"
 
 do_configure() {
 	sed -i '/maketab/s/CC/BUILD_CC/;s/CFLAGS/BUILD_CFLAGS/' makefile
@@ -23,8 +24,7 @@ do_build() {
 	make CC=$CC CFLAGS="$CFLAGS" CPPFLAGS="$CPPFLAGS -DHAS_ISBLANK" LDFLAGS="$LDFLAGS"
 }
 do_install() {
-	vinstall a.out 755 usr/bin nawk
-	vinstall awk.1 644 usr/share/man/man1 nawk.1
-	vinstall LICENSE 644 usr/share/licenses/nawk
-	ln -s nawk ${DESTDIR}/usr/bin/awk
+	vbin a.out nawk
+	vman awk.1 nawk.1
+	vlicense LICENSE
 }