initctl: add -v,--version command line option

This patch adds the -v,--version option to initctl, which acts as an
alias to the 'version' command.  For now they end up in the same old
function, printing the program version.  However, in time this will be
changed so that the 'version' command asks a running Finit for its
version instead of assuming the daemon is of the same version.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

src/initctl.c

@@ -891,12 +891,13 @@ static int usage(int rc)
 		"  -q, --quiet               Silent, only return status of command\n"
 		"  -t, --no-heading          Skip table headings\n"
 		"  -v, --verbose             Verbose output\n"
+		"  -R, --version             Show program version\n"
 		"  -h, --help                This help text\n"
 		"\n"
 		"Commands:\n"
 		"  debug                     Toggle Finit (daemon) debug\n"
 		"  help                      This help text\n"
-		"  version                   Show Finit version\n"
+		"  version                   Show program version\n"
 		"\n", prognm);
 
 	if (has_rcsd)
@@ -1031,6 +1032,7 @@ int main(int argc, char *argv[])
 		{ "quiet",      0, NULL, 'q' },
 		{ "no-heading", 0, NULL, 't' },
 		{ "verbose",    0, NULL, 'v' },
+		{ "version",    0, NULL, 'V' },
 		{ NULL, 0, NULL, 0 }
 	};
 	struct cmd cond[] = {
@@ -1090,7 +1092,7 @@ int main(int argc, char *argv[])
 	cgrp = cgroup_avail();
 	utmp = has_utmp();
 
-	while ((c = getopt_long(argc, argv, "1bcdfh?pqtv", long_options, NULL)) != EOF) {
+	while ((c = getopt_long(argc, argv, "1bcdfh?pqtvV", long_options, NULL)) != EOF) {
 		switch(c) {
 		case '1':
 			ionce = 1;
@@ -1131,6 +1133,9 @@ int main(int argc, char *argv[])
 		case 'v':
 			verbose = 1;
 			break;
+
+		case 'V':
+			return show_version(NULL);
 		}
 	}