[Release] OpenSIPS 1.10 stable release

OpenSIPS 1.10 has now become stable! Check out the new features added in the latest release:
http://www.opensips.org/About/Version-1-10-0

OpenSIPS 1.10.0 is now the latest stable version released, along with older 1.9.1 and 1.8.3 LTS. All three versions are free to use in production environments.

Thank you all for your help and contributions! Keep up the good work!