patch for LIBZMQ-328

Fixed a bug in the mtrie table compaction logic.

Signed-off-by: Staffan Gimåker <staffan@spotify.com>

Add missing files to Windows project files

Improve the test for last_endpoint, use the same ports as other tests

tcp_listener::get_address improvements

Minor fixes to get_address code to fix build on solaris and freebsd. Also service doesnt need to be discovered here

Update docs for last endpoint and add test for IPC last endpoint retrieval

Update documentation for last endpoint to mention inaddr_any and add a test for IPC last endpoint checking

More fixes based on CentOS 6.2 results

Tcp get address

Windows build

Needs explicit cast on solaris

Fix build on solaris

Remove thread safe socket code from C API and tests.

Removing old ECANTROUTE documentation

Revert null checks in the API

Adding more specific installation instructions

Minor cleanups

* Fixed use of ssize_t in zmq_msg_t class
* Corrected error after merge, old reference to inner_fctname (broke build)

Return EFAULT if required arguments are null

Renamed scatter/gather methods, cleaned up source