[package] add snortsam package - plugin for Snort

[package] add snortsam package - plugin for Snort

I would like to introduce you Snortsam, plugin for Snort. This patch was
accidentally superseded due to lack of my explanation (snortsam needs to be
supported by snort - it is supported now). It's in the same state as was
introduced before. Support for snortsam was introduced in Snort in
http://patchwork.openwrt.org/patch/2491/. Current version of Snort (2.9.2.2)
supports Snortsam.

SnortSam is a plugin for Snort, an open-source light-weight Intrusion
Detection System (IDS).

Signed-off-by: Jiri Slachta <slachta@cesnet.cz>
git-svn-id: svn://svn.openwrt.org/openwrt/packages@33791 3c298f89-4303-0410-b956-a3cf2f4a3e73