gpg: New debug flag "keydb".
* g10/options.h (DBG_KEYDB_VALUE): New. * g10/gpg.c (debug_flags): Add it. * g10/keydb.c: Replace all DBG_LOOKUP by DBG_KEYDB. * g10/keyring.c: Ditto. * g10/call-keyboxd.c: Ditto.
Using "lookup" also for key search debugging was not a good idea.
This uses a separate flag for the latter.