[PATCH] chunkd: clone chunksrv_req to chunksrv_resp

This just-committed change prepares for a more significant protocol
change later on (variable-length keys in requests).

This is a network protocol change, though a minor one you probably won't
notice, due to the chunksrv_req/chunksrv_resp structures currently being
twins (that will soon change).

commit 69cf0ae597fd83086c1746a02c776b0bc05d591e
Author: Jeff Garzik <jeff <at> garzik.org>
Date:   Wed Nov 4 16:44:34 2009 -0500

    Clone chunksrv_req into new chunksrv_resp, to separate request and response
    messages.

    - resp_code removed from chunksrv_req
    - s/checksum/sig/ in chunksrv_req
    - req_len() used to calculate request size (preparation for future)
    - resp_init_req() used to init response from request, rather than memcpy()
    - improve data-in debugging

    Signed-off-by: Jeff Garzik <jgarzik <at> redhat.com>

diff --git a/include/chunk_msg.h b/include/chunk_msg.h
index 610f8c5..4222f27 100644
--- a/include/chunk_msg.h
+++ b/include/chunk_msg.h
 <at>  <at>  -10,6 +10,7  <at>  <at>  enum {
 	CHD_USER_SZ		= 64,
 	CHD_KEY_SZ		= 64,