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, 2 insertions, 0 deletions

diff --git a/scripts/makepkg.sh.in b/scripts/makepkg.sh.in
index c1c09006..28e8e7a4 100644
--- a/scripts/makepkg.sh.in
+++ b/scripts/makepkg.sh.in
@@ -2483,6 +2483,8 @@ m4_include(library/parseopts.sh)
 usage() {
 	printf "makepkg (pacman) %s\n" "$makepkg_version"
 	echo
+	printf -- "$(gettext "Make packages compatible for use with pacman")\n"
+	echo
 	printf -- "$(gettext "Usage: %s [options]")\n" "$0"
 	echo
 	printf -- "$(gettext "Options:")\n"