Change to use a unix socket instead of TCP.

This change makes Trousers use a unix domain socket instead of a TCP socket.  This allows tcsd to start without waiting on the network.

Change-Id: Ic66830a03d35bbe503e9a91ca2ebbbd96924fb42

BUG=7892
TEST=install, test cryptohome tpm ownership, crypto, and status

Review URL: http://codereview.chromium.org/3958001
4 files changed