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)
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Merged revisions 429673 from http://svn.asterisk.org/svn/asterisk/branches/11
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Merged revisions 429674 from http://svn.asterisk.org/svn/asterisk/branches/12
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Merged revisions 429675 from http://svn.asterisk.org/svn/asterisk/branches/13


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@429683 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/udptl.c

@@ -520,7 +520,7 @@ static int udptl_rx_packet(struct ast_udptl *s, uint8_t *buf, unsigned int len)
 #if 0
 			fprintf(stderr, "FEC: ");
 			for (j = 0; j < s->rx[x].fec_len[i]; j++)
-				fprintf(stderr, "%02X ", data[j]);
+				fprintf(stderr, "%02hhX ", data[j]);
 			fprintf(stderr, "\n");
 #endif
 		}