High: ipcc: Add abilty to verify dgram kernel buffer size meets max msg value
Low: check_ipc.c: Verify dgram max size during tests
Low: ipc_socket.c: Handle the unlikely event of an EAGAIN or EINTR during dgram max size detection
Low: tests: Add dgram max size detection test
Merge pull request #81 from davidvossel/dgram_max_msg

Added ability to estimate kernel's actual max dgram buffer size in a portable way.