Fix printf problems with high ascii characters after r413586 (1.8).

In r413586 (1.8) various casts were added to silence gcc 4.10 warnings.
Those fixes included things like:

    -out += sprintf(out, "%%%02X", (unsigned char) *ptr);
    +out += sprintf(out, "%%%02X", (unsigned) *ptr);

That works for low ascii characters, but for the high range that yields
e.g. FFFFFFC3 when C3 is expected.

This changeset:
- fixes those casts to use the 'hh' unsigned char modifier instead
- consistently uses %02x instead of %2.2x (or other non-standard usage)
- adds a few 'h' modifiers in various places
- fixes a 'replcaes' typo
- dev/urandon typo (in 13+ patch)

Review: https://reviewboard.asterisk.org/r/4263/

ASTERISK-24619 #close
Reported by: Stefan27 (on IRC)
........

Merged revisions 429673 from http://svn.asterisk.org/svn/asterisk/branches/11
........

Merged revisions 429674 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/13@429675 65c4cc65-6c06-0410-ace0-fbb531ad65f3

res/res_pktccops.c

@@ -799,9 +799,9 @@ static void *do_pktccops(void *data)
 				if ((idx = ast_poll_fd_index(pfds, nfds, cmts->sfd)) > -1 && (pfds[idx].revents & POLLIN)) {
 					len = cops_getmsg(cmts->sfd, recmsg);
 					if (len > 0) {
-						ast_debug(3, "COPS: got from %s:\n Header: versflag=0x%.2x opcode=%i clienttype=0x%.4x msglength=%u\n",
-							cmts->name, (unsigned)recmsg->verflag,
-							recmsg->opcode, (unsigned)recmsg->clienttype, recmsg->length);
+						ast_debug(3, "COPS: got from %s:\n Header: versflag=0x%02hhx opcode=%i clienttype=0x%04hx msglength=%u\n",
+							cmts->name, recmsg->verflag,
+							recmsg->opcode, recmsg->clienttype, recmsg->length);
 						if (recmsg->object != NULL) {
 							pobject = recmsg->object;
 							while (pobject != NULL) {