[PATCH libxtrans] Increase UNIX socket buffer size

[Alan Coopersmith]

Do we need to do the same for the SO_RCVBUF as well?

Though looking at the pfiles output from Xorg on Solaris, it appears we
default to mismatched sizes for some reason:

   37: S_IFSOCK mode:0666 dev:621,0 ino:56871 uid:0 gid:0 size:0
       O_RDWR|O_NONBLOCK
	SOCK_STREAM
	SO_SNDBUF(16384),SO_RCVBUF(5120)
	sockname: AF_UNIX /tmp/.X11-unix/X0
	peername: AF_UNIX
	peer: metacity[14049] zone: global[0]

-- 
	-Alan Coopersmith-              alan.coopersmith at oracle.com
	 Oracle Solaris Engineering - http://blogs.oracle.com/alanc