Rename -s parameter (host) to -h.

Now the short parameter is the first letter of the long parameter
which is much more natural.

ChangeLog

 xxxx-xx-xx : Version next
  * Rename -v / --verbose parameter to -d / --debug.
  * Rename -h parameter (help) to -H.
+ * Rename -s parameter (host) to -h.
 
 2014-11-27 : Version 0.2
  * Fix port routing. Previously it was reversed and incorrect.

README

  Usage: videohubctrl --host <host> [..commands..]
 
 Main options:
- -s --host <hostname>       | Set device hostname.
+ -h --host <hostname>       | Set device hostname.
  -p --port <port_number>    | Set device port (default: 9990).
 
 Misc options:

videohubctrl.c

 
 static const char *program_id = PROGRAM_NAME " Version: " VERSION " Git: " GIT_VER;
 
-static const char short_options[] = "s:p:qdHVim";
+static const char short_options[] = "h:p:qdHVim";
 
 static const struct option long_options[] = {
-	{ "host",				required_argument, NULL, 's' },
+	{ "host",				required_argument, NULL, 'h' },
 	{ "port",				required_argument, NULL, 'p' },
 	{ "quiet",				no_argument,       NULL, 'q' },
 	{ "debug",				no_argument,       NULL, 'd' },
 	printf(" Usage: " PROGRAM_NAME " --host <host> [..commands..]\n");
 	printf("\n");
 	printf("Main options:\n");
-	printf(" -s --host <hostname>       | Set device hostname.\n");
+	printf(" -h --host <hostname>       | Set device hostname.\n");
 	printf(" -p --port <port_number>    | Set device port (default: 9990).\n");
 	printf("\n");
 	printf("Misc options:\n");
 	data->dev_port = "9990";
 	while ((j = getopt_long(argc, argv, short_options, long_options, NULL)) != -1) {
 		switch (j) {
-			case 's': // --host
+			case 'h': // --host
 				data->dev_host = optarg;
 				break;
 			case 'p': // --port