Generate a dictionary of OIDs for fuzzers

It turns out that (some?) fuzzers can read a dictionary of OIDs,
so we generate one as part of the usual 'make update'.

Fixes #4615

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Kurt Roeckx <kurt@roeckx.be>
(Merged from https://github.com/openssl/openssl/pull/4637)

fuzz/mkfuzzoids.pl

diff --git a/fuzz/mkfuzzoids.pl b/fuzz/mkfuzzoids.pl
new file mode 100755
index 0000000..4bf97bc
--- /dev/null
+++ b/fuzz/mkfuzzoids.pl
@@ -0,0 +1,27 @@
+#! /usr/bin/env perl
+# Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
+#
+# Licensed under the OpenSSL license (the "License").  You may not use
+# this file except in compliance with the License.  You can obtain a copy
+# in the file LICENSE in the source distribution or at
+# https://www.openssl.org/source/license.html
+
+my $obj_dat_h = $ARGV[0];
+
+open IN, '<', $obj_dat_h
+    || die "Couldn't open $obj_dat_h : $!\n";
+
+while(<IN>) {
+    s|\R$||;                    # Better chomp
+
+    next unless m|^\s+((0x[0-9A-F][0-9A-F],)*)\s+/\*\s\[\s*\d+\]\s(OBJ_\w+)\s\*/$|;
+
+    my $OID = $1;
+    my $OBJname = $3;
+
+    $OID =~ s|0x|\\x|g;
+    $OID =~ s|,||g;
+
+    print "$OBJname=\"$OID\"\n";
+}
+close IN;