lib-storage: Added "oldestonly" search arg to stop searching after the first non-match. This parameter works only for doveadm search queries. It's not fully exact currently, because if mailbox.search_next_update_seq() skips over non-matching messages we don't stop if the next message matches. So this parameter is mainly useful for optimization of commands like: doveadm expunge -u user@domain mailbox inbox savedsince 30d oldestonly Where the timestamps should be ascending all the time anyway and there's no point in continuing to search for more mails after the first timestamp is too high.

lib-storage: Search query building no longer converts strings to decomposed titlecase.

lib-storage: Fail mail_search_build() if charset is unknown, even if it's not used. For example this causes "SEARCH CHARSET foo ALL" command to fail.

Changed header/body searching to do search key charset translation earlier. This cleans up and simplifies error handling.

lib-storage: Added mail_search_build_add() --HG-- branch : HEAD

Added support for mail search input parsers. doveadm now uses command line parser. --HG-- branch : HEAD

lib-storage: Added search query building from human-friendly input. --HG-- branch : HEAD

lib-storage: Rewrote search query building code to be more modular. --HG-- branch : HEAD

mail-storage API: Added some function description comments. --HG-- branch : HEAD

Make mail_search_args an independent structure that can be used for multiple separate searches. --HG-- branch : HEAD

Implemented SEARCHRES extension. --HG-- branch : HEAD

Moved IMAP messageset handling to lib-imap/ and searching to lib-storage/. Rewrote messageset handling to use struct seq_range instead. --HG-- branch : HEAD

Moved IMAP messageset handling to lib-imap/ and searching to lib-storage/. Rewrote messageset handling to use struct seq_range instead. --HG-- branch : HEAD