(rsync_result_t): New enum for return types.
(struct rsync_receive_state): Renamed attribute full_sum to
sum_md5.
(struct rsync_receive_state): Made the state attribute an enum.
Moved the constants from receive.c, and renamed them to use a
RSYNC_RECIEVE_-prefix.
(struct rsync_send_state): Changed state and buffering.

* src/rsync/generate.c, src/rsync/receive.c, src/rsync/send.c,
src/rsync/rsync.h: Changed return types from int to enum
rsync_result_t.

Rev: src/rsync/rsync.h:1.5