Snort 2.9.11

What's new in this version:

New:
- Changes to eliminate Snort restart when there are changes to the memory allocated for preprocessors, by releasing unused or least recently used memory when needed
- Added support for storing filenames in Unicode for SMB protocol
- Added implementation of hostPortCache versioning for unknown flows in AppID to detect and block BitTorrent

Improvements:
- Enhanced RTSP metadata parsing to match the user-agent field to detect RTSP traffic over Windows Media
- Performance improvement when SYN rate limit has reached and drop is configured as next actio
- Control-socket and side-channel support for FreeBSD platform
- Fixed issue in file signature lookup for retransmitted FTP packet
- Enhanced the processing of SIP/RTP future flows without ignoring them
- Changes made in PDF/SWF decompression by adding boundary to the size of the decompressed data
- Added a null check to prevent copy unless debugHostIp is configured in AppId
- Fixed issue where FTP file type block doesn't work for retried download
- Resolved issue where Snort is inappropriately handling traffic for which AppId was creating future flow
- Performance improvements for SIP/RTP audio and video data flow in AppId
- Performance and stability improvements in FTP preprocessor like incorrect referencing of ftp_data_session after its pruned
- Stability improvement by resolving valgrind reported issues in AppId
- Improved flushing mechanism for HTTP POST header
- Added changes to display AppId for IPv6 unified events
- Fixed issues with printing of messages for out-of-order packets
- Fixed issue in increment of detection filter counter when rule is used in multiple configurations
- Fixed dynamic preprocessor compilation failure in OpenBSD platform
- Added changes to improve performance of ipvar list comparison
- Enhanced SMTP client detection by allowing line folding and all authentication methods