xbps-casper: do not run polkit script if not installed, fixed some msgs.

srcpkgs/xbps-casper/files/scripts/casper-bottom/15autologin

@@ -1,7 +1,7 @@
 #!/bin/sh
 
 PREREQ=""
-DESCRIPTION="Setting up automatic login..."
+DESCRIPTION="Setting up automatic login"
 
 prereqs()
 {

srcpkgs/xbps-casper/files/scripts/casper-bottom/44pk_allow_ubuntu

@@ -1,7 +1,7 @@
 #!/bin/sh
 
 PREREQ=""
-DESCRIPTION="Grant administrative PolicyKit pivilieges to default user..."
+DESCRIPTION="Modifying PolicyKit grants for '$USERNAME' user"
 
 prereqs()
 {
@@ -18,6 +18,10 @@ esac
 
 . /scripts/casper-functions
 
+# Check that polkit is installed.
+if [ ! -x "/root/usr/libexec/polkitd" ]; then
+	exit 0
+fi
 log_begin_msg "$DESCRIPTION"
 
 # configure PolicyKit in live session

srcpkgs/xbps-casper/template

@@ -1,6 +1,8 @@
 # Template file for 'xbps-casper'
 pkgname=xbps-casper
-version=0.6.ubuntu1.236
+_localver=0.7	# XBPS package version
+_distver=1.236	# This should match the upstream (Ubuntu) version
+version=${_localver}.${_distver}
 build_style=custom-install
 short_desc="Run a live preinstalled system from read-only media"
 maintainer="Juan RP <xtraeme@gmail.com>"