snort, update to 2.9.4

update snort to 2.9.4.  
Note: 

"To me its not time to do this yet."
Snort 2.9.2.3 END OF LIFE 2013-02-28. (http://www.snort.org/vrt/rules/eol_policy).
snortrules-snapshot-2923.tar.gz Jan, 20 2013 is the last one as far as I know.

Moreover, snort 2.9.2.3 pbi's are still download-able, so starting the build process
for 2.9.4 should not be an issue what so ever.

"Also you are enabling options which were previously disabled on the port."
I disabled snortsam, because its broken in the ports tree and added Large Pcap support.

"The patch file is a bit strange why needed a rename?"
I renamed the patch so the snort version its built for is known without looking at the source code.

Also have a pull request for pfsense-packages here bsdperimeter/pfsense-packages#343.

I tested snort.2.9.4 xml changes and pbis are being built correctl.

Robert