Teach tools/install.sh the -d directory mode.

Sync up with flags understood by install(1) [1], and make install(1)'s
usage output not hide the clearly documented -M flag.

PR:		misc/154739 [1]
Submitted by:	arundel

tools/install.sh

@@ -29,14 +29,30 @@
 # $FreeBSD$
 
 # parse install's options and ignore them completely.
+dirmode=""
 while [ $# -gt 0 ]; do
     case $1 in
-    -[bCcMpSs]) shift;;
+    -d) dirmode="YES"; shift;;
+    -[bCcMpSsv]) shift;;
     -[Bfgmo]) shift; shift;;
     -[Bfgmo]*) shift;;
     *) break;
     esac
 done
 
+if [ "$#" -eq 0 ]; then
+	echo "$0: no files/dirs specified" >&2
+	exit 1
+fi
+
+if [ -z "$dirmode" ] && [ "$#" -lt 2 ]; then
+	echo "$0: no target specified" >&2
+	exit 1
+fi
+
 # the remaining arguments are assumed to be files/dirs only.
-exec install -p $*
+if [ -z "$dirmode" ]; then
+	exec install -p "$@"
+else
+	exec install -d "$@"
+fi

usr.bin/xinstall/xinstall.c

@@ -769,9 +769,9 @@ static void
 usage(void)
 {
 	(void)fprintf(stderr,
-"usage: install [-bCcpSsv] [-B suffix] [-f flags] [-g group] [-m mode]\n"
+"usage: install [-bCcMpSsv] [-B suffix] [-f flags] [-g group] [-m mode]\n"
 "               [-o owner] file1 file2\n"
-"       install [-bCcpSsv] [-B suffix] [-f flags] [-g group] [-m mode]\n"
+"       install [-bCcMpSsv] [-B suffix] [-f flags] [-g group] [-m mode]\n"
 "               [-o owner] file1 ... fileN directory\n"
 "       install -d [-v] [-g group] [-m mode] [-o owner] directory ...\n");
 	exit(EX_USAGE);