runit: fix -Werror failure for i686

Fix a warning about the wrong type short being used for
getgroups(2) and setgroups(2) parameter 2 which causes the
i686 build to fail here, probably because of -Werror.

Also "modernize" the template's indentation and use
vbin, vman ...

srcpkgs/runit/template

@@ -1,7 +1,7 @@
 # Template file for 'runit'
 pkgname=runit
 version=2.1.2
-revision=5
+revision=6
 wrksrc="admin"
 short_desc="A UNIX init scheme with service supervision"
 maintainer="Juan RP <xtraeme@voidlinux.eu>"
@@ -27,6 +27,8 @@ do_build() {
 	echo "$CC $LDFLAGS -Wl,-z -Wl,noexecstack" >conf-ld
 	# set default service path to /var/service
 	sed -i -e 's:^char \*varservice ="/service/";$:char \*varservice ="/var/service/";:' sv.c
+	# change type short to gid_t for getgroups(2) and setgroups(2)
+	sed -i -e 's:short x\[4\];$:gid_t x[4];:' chkshsgr.c
 
 	make ${makejobs}
 }
@@ -38,12 +40,16 @@ do_install() {
 	vmkdir var
 	ln -s ../run/runit/runsvdir/current ${DESTDIR}/var/service
 
-  vmkdir usr/bin
-  install -m0755 {chpst,runit,runit-init,runsv,runsvchdir,runsvdir,sv,svlogd,utmpset} ${DESTDIR}/usr/bin
+	local f
+	for f in chpst runit runit-init runsv runsvchdir runsvdir \
+		sv svlogd utmpset; do
+		vbin $f
+	done
 
 	cd ..
-  vmkdir usr/share/man/man8
-  install -m0644 man/* ${DESTDIR}/usr/share/man/man8
+	for f in man/*; do
+		vman $f
+	done
 
 	vinstall ${FILESDIR}/_sv 644 usr/share/zsh/site-functions
 }