Disable and remove pthreads to support compiling with clang
Allow closing a monitor connection to force the server to quit
Allow for an msp handler that closes another socket, dont consider a closed socket to be listening
Add assertions to http_server_poll()

This might help discover the cause of the "runaway http_server_poll"
bug sometimes observed in Batphone
Refactor JNI test script
UNFINISHED Add MeshMS Java API tests
Import Apache Commons Base64 decoder/encoder
UNFINISHED Implement MeshMS Java API