Fixed:

1. Backported calculation the index statistics correctly for very large tables.
2. Fixed negative result of COUNT() from large table
3. Backported fix for CORE-6144: Inconsistent behaviour of the NEW context variable in AFTER UPDATE OR DELETE triggers
4. Transfer provider id to client (need for jaybird) #39830
5. Authentication using certificate doesn't work if there is the signature keys in a container. #40564
6. Change "sambaPwdLastSet" LDAP attribute when samba password has been changed. #38569
7. Use 16bit wide characters for sambaNTPassword calculating
8. Missed part of the commit 4931c0cc. Backported switch to 64-bit savepoint numbers as a straightforward solution for CORE-5228 (Restore may hang if the database contains more than 4 billion records). #46289

Ported from Firebird:

1. Let logAndDie() call abort() on all platforms. It prevent hung when process exits (instead of aborts) and tries to release resources.
2. Removed debug code that should not be committed. Sorry for inconvenience.
3. This should fix double close of srcBlob if extBlob->close() failed
4. Fixed bug CORE-6150 : Bugcheck when PK\UK\FK constraint check read record already marked as damaged
5. Fixed bug CORE-6142 : Error "connection lost to database" could happen when application creates few local attachments (using XNET) simultaneously
6. Backported fix for bug CORE-6137 : Server crashes when it run SQL
7. CORE-5868