gpg: Update sub-options of --keyserver-options
* g10/options.h (KEYSERVER_HTTP_PROXY): New. (KEYSERVER_USE_TEMP_FILES, KEYSERVER_KEEP_TEMP_FILES): Remove. (KEYSERVER_TIMEOUT): New. * common/keyserver.h (KEYSERVER_TIMEOUT): Remove. * g10/keyserver.c (keyserver_opts): Remove obsolete "use-temp-files" and "keep-temp-files". Add "http-proxy" and "timeout". (parse_keyserver_options): Remove 1.2 compatibility option "honor-http_proxy". Remove "use-temp-files" and "keep-temp-files" code.
Note that many of these options where implicitly used by passing any
unknown option down to the former keyserver helpers. The don't exist
anymore thus we need to make them explicit. Another patch will convey
them to dirmngr. Temp files are not anymore used thus they can be
removed and will be ignored when used.
- Signed-off-by: Werner Koch <wk@gnupg.org>