nfs-utils: create a rpcgen subpkg required by autofs.

rpcgen is provided by glibc, but we still need this for musl.

srcpkgs/nfs-utils/template

@@ -1,7 +1,7 @@
 # Template file for 'nfs-utils'
 pkgname=nfs-utils
 version=1.3.3
-revision=3
+revision=4
 build_style=gnu-configure
 configure_args="--with-statduser=nobody --enable-gss --enable-nfsv4
  --with-statedir=/var/lib/nfs --enable-libmount-mount --enable-gss
@@ -50,3 +50,17 @@ post_install() {
 
 	rm -rf ${DESTDIR}/var/lib/nfs
 }
+
+rpcgen_package() {
+	short_desc="A RPC protocol compiler"
+	pkg_install() {
+		case "$XBPS_TARGET_MACHINE" in
+		*-musl)
+			cd ${wrksrc}/tools/rpcgen
+			make clean
+			make CC_FOR_BUILD="$CC"
+			vbin ${wrksrc}/tools/rpcgen/rpcgen
+			;;
+		esac
+	}
+}

srcpkgs/rpcgen

@@ -0,0 +1 @@
+nfs-utils