Gromox 2.36

Fixes:

• ews: fix an ABA locking problem when EWS unsubscribe actions were processed
• genimport: fix a data juggling issue that led to mt2exm printing proptag … from input stream has no named property info
• mbck: do not attempt to repair allocated_eids if repair mode was not selected, fixing mbck printing sqlite3_prep(INSERT INTO allocated_eids) … inside a readonly TXN.
• exmdb: fix an issue where creating new messages-embedded-in-messages could lead to sqlite3_exec(… INSERT INTO messages … VALUES (65536, …): UNIQUE constraint failed: messages.message_id (19), for msgids very close to the end of the block
• mkprivate et al: fix an issue where force-overwriting databases would print database is locked
• oxcmail: during conversion from RFC5322 to MAPI form, avoid generating a zero-length attachment for a zero-length mail

Enhancements:

• mbop: new commands "ping", "for-all-users", "echo-username"
• exmdb: faster process shutdown through parallelized closing of sqlite files
• exmdb: better location diagnostics for RO-RO transactions, for RW-in-RO, and ROLLBACK issues

Changes:

• exmdb: the default value for exmdb_provider.cfg:cache_interval (time until inactive sqlite files are closed) was reduced from 2h to 15min to curb system resource use
• exmdb: the default value for exmdb_provider.cfg:populating_threads_num (asynchronous search folder population threads) from 50 to 4 to curb system resource use
• exmdb: deactivate implicit integrity check when upgrading a mailbox's database schema, it takes too much time
• (Integrity checks can still be done offline with mkprivate -U --integ)