weston-terminal crash

[Bill Spitzak]

FIXED!!!

connection.c sent a 4096 byte block of garbage if it wanted to send an 
fd and there happened to be zero data to send as well. This is the first 
diff in the patch.

This patch also makes it retry on EAGAIN, although I suspect the normal, 
rather than non-blocking, sockets should be used.

It also fixes some of the error message printfs to make arguments match 
the format strings and to make them more consistent with each other.

Hope this can be put in asap!

PS: I have no idea how to submit patches. Going to try now *without* 
"[PATCH]" in the title.

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