Refactored merge options into separate merge-options.txt.

Refactored fetch options into separate fetch-options.txt.
Made git-merge use merge-options.
Made git-fetch use fetch-options.
Made git-pull use merge-options and fetch-options.
Added --help option to git-pull and git-format-patch scripts.
Rewrote Documentation/Makefile to dynamically determine
include dependencies.

Signed-off-by: Jon Loeliger <jdl@freescale.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>

git-format-patch.sh

@@ -8,6 +8,7 @@
 usage () {
     echo >&2 "usage: $0"' [-n] [-o dir | --stdout] [--keep-subject] [--mbox]
     [--check] [--signoff] [-<diff options>...]
+    [--help]
     ( from..to ... | upstream [ our-head ] )
 
 Prepare each commit with its patch since our-head forked from upstream,
@@ -63,6 +64,9 @@ do
     --output-directo|--output-director|--output-directory)
     case "$#" in 1) usage ;; esac; shift
     outdir="$1" ;;
+    -h|--h|--he|--hel|--help)
+        usage
+	;;
     -*' '* | -*"$LF"* | -*'	'*)
 	# Ignore diff option that has whitespace for now.
 	;;