Roll AFL 2.31b:2.38b and switch coverage to use trace-pc-guard.

third_party/afl/src/afl-whatsup

 #!/bin/sh
 #
 # american fuzzy lop - status check tool
 # --------------------------------------
 #
 # Written and maintained by Michal Zalewski <lcamtuf@google.com>
 #
 # Copyright 2015 Google Inc. All rights reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ skipping 56 matching lines @@
 TOTAL_PENDING=0
 
 if [ "$SUMMARY_ONLY" = "" ]; then
 
   echo "Individual fuzzers"
   echo "=================="
   echo
 
 fi
 
-for i in `find . -maxdepth 2 -iname fuzzer_stats`; do
+for i in `find . -maxdepth 2 -iname fuzzer_stats | sort`; do
 
   sed 's/^command_line.*$/_skip:1/;s/[ ]*:[ ]*/="/;s/$/"/' "$i" >"$TMP"
   . "$TMP"
 
   RUN_UNIX=$((CUR_TIME - start_time))
   RUN_DAYS=$((RUN_UNIX / 60 / 60 / 24))
   RUN_HRS=$(((RUN_UNIX / 60 / 60) % 24))
 
   if [ "$SUMMARY_ONLY" = "" ]; then
 
@@ skipping 66 matching lines @@
 echo "       Pending paths : $TOTAL_PFAV faves, $TOTAL_PENDING total"
 
 if [ "$ALIVE_CNT" -gt "1" ]; then
   echo "  Pending per fuzzer : $((TOTAL_PFAV/ALIVE_CNT)) faves, $((TOTAL_PENDING/ALIVE_CNT)) total (on average)"
 fi
 
 echo "       Crashes found : $TOTAL_CRASHES locally unique"
 echo
 
 exit 0