Make --version uniform and avoid hard-coded program name.

util/grub-mkconfig.in

@@ -23,7 +23,8 @@ exec_prefix=@exec_prefix@
 sbindir=@sbindir@
 libdir=@libdir@
 sysconfdir=@sysconfdir@
-package_version=@PACKAGE_VERSION@
+PACKAGE_NAME=@PACKAGE_NAME@
+PACKAGE_VERSION=@PACKAGE_VERSION@
 host_os=@host_os@
 datarootdir=@datarootdir@
 datadir=@datadir@
@@ -31,6 +32,8 @@ pkgdatadir=${datadir}/`echo @PACKAGE_TARNAME@ | sed "${transform}"`
 grub_cfg=""
 grub_mkconfig_dir=${sysconfdir}/grub.d
 
+self=`basename $0`
+
 grub_mkdevicemap=${sbindir}/`echo grub-mkdevicemap | sed ${transform}`
 grub_probe=${sbindir}/`echo grub-probe | sed ${transform}`
 
@@ -38,7 +41,7 @@ grub_probe=${sbindir}/`echo grub-probe | sed ${transform}`
 # Print the usage.
 usage () {
     cat <<EOF
-Usage: $0 [OPTION]
+Usage: $self [OPTION]
 Generate a grub config file
 
   -o, --output=FILE       output generated config to FILE [default=stdout]
@@ -62,7 +65,7 @@ for option in "$@"; do
 	usage
 	exit 0 ;;
     -v | --version)
-	echo "$0 (GNU GRUB ${package_version})"
+	echo "$self (${PACKAGE_NAME}) ${PACKAGE_VERSION}"
 	exit 0 ;;
     -o)
 	next_grub_cfg=:
@@ -113,7 +116,7 @@ if [ "$EUID" != 0 ] ; then
       done ;;
   esac
   if [ $root != t ] ; then
-    echo "$0: You must run this as root" >&2
+    echo "$self: You must run this as root" >&2
     exit 1
   fi
 fi
@@ -284,7 +287,7 @@ cat << EOF
 #
 # DO NOT EDIT THIS FILE
 #
-# It is automatically generated by $0 using templates
+# It is automatically generated by $self using templates
 # from ${grub_mkconfig_dir} and settings from ${sysconfdir}/default/grub
 #
 EOF