Add shared memory data transfer test
	modified:   echotestlib/echotestlib.h
	modified:   framework/framework.h
	modified:   kqueue/kqueueserver.cpp
	modified:   readme.md
	modified:   select/Makefile
	new file:   shmem/Makefile
	new file:   shmem/shmemserver.cpp
	modified:   udp-kqueue/udpkqueueserver.cpp