Added DEALER-DEALER as legal combination
Extend ZMQ_ROUTER_RAW test

Add test when the zeromq socket connects to a TCP socket.
The test now fails due to bug in the zeromq library.
Never exchange identities for sockets in raw mode

Zeromq shall never send/receive socket identifiers for sockets in raw
mode. The existing implementation breaks this requirement after
reconnection.
Merge pull request #462 from hurtonm/raw_fixes

Fix raw mode on reconnect
Added ROUTER-ROUTER as legal combination
Don't forward identities to DEALER sockets
Use const_cast operator to remove const modifier
Small cleanups
Merge pull request #464 from hurtonm/code_cleanup

Code cleanup
Bring along CMake patchset from zeromq3-x for adding minor version to Windows labeling.
Update source list with raw codec.
Merge pull request #465 from steve-o/cmake-minor

Cmake minor version labeling and sync with 3.x
Merge pull request #463 from hintjens/master

Addded ROUTER-ROUTER (back) as valid combination
Simplify implementation of DEALER socket
Merge pull request #466 from hurtonm/code_cleanup

Simplify implementation of DEALER socket
Don't pass flags to xsend method
Don't pass flags to xrecv method
Merge pull request #467 from hurtonm/code_cleanup

Code cleanup
Resolve LIBZMQ-465
Merge pull request #468 from hurtonm/issue_465

Resolve LIBZMQ-465