Allows the use our getopt instead of the bundled one.
From Peter Selinger (upstream author)
Can be removed for ccrypt>=1.12

Index: src/main.c
--- src/main.c.orig
+++ src/main.c
@@ -180,7 +180,7 @@ static struct option longopts[] = {
   {0, 0, 0, 0}
 };
 
-static const char *shortopts = "edcxuhVLvqDfmE:K:k:F:H:S:sP:Q:tby:rRlT-";
+static const char *shortopts = "edcxuhVLvqDfmE:K:k:F:H:S:sP:Q:tby:rRlT";
 
 static cmdline read_commandline(int ac, char *av[]) {
   cmdline cmd;