* keyserver-internal.h, keyserver.c (print_keyrec, parse_keyrec,
show_prompt, keyserver_search_prompt, keyserver_spawn): Go to version 1 of
the keyserver protocol.  This is a better design, similar to
--with-colons, that allows for keys with multiple user IDs rather than
using multiple keys.  It also matches the machine readable pksd format.
Also use a prettier --search-keys listing format that can fill different
size windows (currently set at 24 lines).