expand_groups), g10.c (main, add_group): Add new "group" command to allow
one name to expand into multiple keys. For simplicity, and to avoid
potential loops, we only expand once - you can't make an alias that points
to an alias.
* main.h, g10.c (main), keygen.c (build_personal_digest_list): Simplify
the default digest list - there is really no need for the other hashes
since they will never be used after SHA-1 in the list.
* options.skel, options.h, g10.c (main), hkp.c (hkp_ask_import,
hkp_export, hkp_search), keyserver.c (parse_keyserver_options,
parse_keyserver_uri, keyserver_work, keyserver_refresh): Make the
"x-broken-hkp" keyserver scheme into keyserver-option "broken-http-proxy".
Move honor_http_proxy into keyserver_options. Canonicalize the three
variations of "hkp", "x-hkp", and "x-broken-hkp" into "hkp".