More KNF.
Remove MemCheck_{on,off} that escaped last time around.
Wrap some long lines.
Remove redundant test introduced in s3_pkt.c on 20001225, which got cargo-culted
(with an XXX comment, though) in d1_pkt.c in 2005.
Remove unused defines.
Fix a Y2038 problem, by conversion of long to time_t.

The TS_RESP_CTX_set_time_cb() API gets removed. Nothing in the greater
ecosystem ever calls it.  This API needs to be removed, because if
anyone ever calls on a BE 32 system assuming long rather than time_t,
it will be dangerously incompatible.

ok miod guenther