Improve --help switch output for pacman contrib and pacman scripts

Unify the formatting of the --help switch for pacman utils, if it exists.
All of the pacman utils will now output help text using the following
format:

  util-name (pacman) v<pacman version>

  one line description of util's purpose

  Usage: util-name [options]

    -b, --bar      whatever --bar does
    -f, --foo      whatever --foo does
    -h, --help     display this help message

Reported-by: Karol Błażewicz <karol.blazewicz at gmail.com>
Signed-off-by: Jason St. John <jstjohn@purdue.edu>

1 files changed, 5 insertions, 3 deletions

diff --git a/contrib/pacsysclean.sh.in b/contrib/pacsysclean.sh.in
index 37219ab5..36319215 100644
--- a/contrib/pacsysclean.sh.in
+++ b/contrib/pacsysclean.sh.in
@@ -8,9 +8,12 @@ declare -r myver='@PACKAGE_VERSION@'
 PACMAN_OPTS=
 
 usage() {
-	echo "$myname - Sort installed packages by increasing installed size."
+	echo "${myname} (pacman) v${myver}"
 	echo
-	echo "Usage: $myname [options]"
+	echo "Sort installed packages by increasing installed size. Useful for"
+	echo "system clean-up."
+	echo
+	echo "Usage: ${myname} [options]"
 	echo
 	echo "Options:"
 	echo "  -o <options>     Specify custom pacman query options (e.g., dt)"
@@ -22,7 +25,6 @@ version() {
 	echo 'Copyright (C) 2011 Eric Bélanger <snowmaniscool@gmail.com>'
 }
 
-
 if [ -n "$1" ]; then
 	case "$1" in
 		-o) PACMAN_OPTS="${2}" ;;