Added configuration fields for mp_join; now it's possible to put
different variables before computing ful_hmac (3rd ack of mp_join).

New test creations are made
Adding fuzzing tests creation tool
Refactoring for i386 machines. Need to test u64 values entered by the
tester.
Tests modifications to run correctly
Adding run_test.sh in tests folder
Merge branch 'master' into mypdrill
Merge branch 'mypdrill' into more_tests

Signed-off-by: Christoph Paasch <christoph.paasch@uclouvain.be>

Conflicts:
	gtests/net/packetdrill/examples/mptcp/mp_fail/mp_fail_specified_client.pkt
	gtests/net/packetdrill/examples/tests/run_test.sh
	gtests/net/packetdrill/examples/tests/sock_headers/so_rcvbuf-sndbuff.pkt
	gtests/net/packetdrill/examples/tests/tcp_headers/tcp_cork_on_06.pkt
	gtests/net/packetdrill/examples/tests/tcp_headers/tcp_cork_on_08-bis.pkt
	gtests/net/packetdrill/examples/tests/tcp_headers/tcp_cork_on_08.pkt
	gtests/net/packetdrill/examples/tests/tcp_headers/tcp_cork_on_10.pkt
	gtests/net/packetdrill/examples/tests/tcp_headers/tcp_nodelay_off_01.pkt
	gtests/net/packetdrill/examples/tests/tcp_headers/tcp_quickack_off.pkt
Fixes to tests

Signed-off-by: Christoph Paasch <christoph.paasch@uclouvain.be>