Fix build on systems that already have ntohll/htonll

BIT-1234 #close
Better documentation for sub_bytes
Merge branch 'topic/jimmyjones2/string-doc' of https://github.com/jimmyjones2/bro
Fix possible buffer over-read in DNS TSIG parsing
Fix a memory leak when bind() fails due to EADDRINUSE.
Change EDNS parsing code to use rdlength more cautiously.

It shouldn't ever be negative, but if it were, using it to modify the
data pointer/length isn't appropriate.
Simplify a conditional with equivalent branches.
Merge remote-tracking branch 'origin/fastpath'

* origin/fastpath:
  Simplify a conditional with equivalent branches.
  Change EDNS parsing code to use rdlength more cautiously.
  Fix a memory leak when bind() fails due to EADDRINUSE.
  Fix possible buffer over-read in DNS TSIG parsing
fix null pointer dereference in ocsp verification code in case no certificate
is sent as part as the ocsp reply.

Addresses BIT-1212

There is an additional issue here that prevents the correct verification of
proofs in quite a few cases; this will be addressed in a separate commit.
Fix ocsp reply validation - there were a few things that definitely were wrong.

Now the right signer certificate for the reply is looked up (and no longer assumed that it is the first one) and a few compares are fixed. Plus - there are more test cases that partially send certificates in the ocsp message and partially do not - and it seems to work fine in all cases.

Addresses BIT-1212
Also make links in documentation templates protocol relative.

In case we do a point release, including this commit would be very
helpful - without the bro documentation pages are somewhat broken
over https.
Merge remote-tracking branch 'origin/fastpath'

* origin/fastpath:
  Also make links in documentation templates protocol relative.
Merge remote-tracking branch 'origin/topic/johanna/ticket-1212'

* origin/topic/johanna/ticket-1212:
  Fix ocsp reply validation - there were a few things that definitely were wrong.
  fix null pointer dereference in ocsp verification code in case no certificate is sent as part as the ocsp reply.
Merge remote-tracking branch 'origin/master' into topic/robin/pktsrc
Bugfixes and test updates.