Add missing 'F' letter to getopt so it magically becomes a valid option. (issue #8960 reported by tzafrir)

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@53072 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/asterisk.c

@@ -2455,7 +2455,7 @@ int main(int argc, char *argv[])
 	if (getenv("HOME")) 
 		snprintf(filename, sizeof(filename), "%s/.asterisk_history", getenv("HOME"));
 	/* Check for options */
-	while ((c = getopt(argc, argv, "mtThfdvVqprRgciInx:U:G:C:L:M:")) != -1) {
+	while ((c = getopt(argc, argv, "mtThfFdvVqprRgciInx:U:G:C:L:M:")) != -1) {
 		switch (c) {
 #if HAVE_WORKING_FORK
 		case 'F':