Avoid shutdown delay when all logins appear wrong due to closed security database

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@59677 65644016-39b1-43b1-bf79-96bc8fe82c15
Fixed CORE-4435: After calling release() for attachment to database (instead detach) in embedded mode attachment remains active forever (and some cleanup re. reference counters)

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@59678 65644016-39b1-43b1-bf79-96bc8fe82c15
Front ported support for fallocate() call on Linux. 
Front ported improvement CORE-4443 : Use fast file grow on those Linux systems which supports it


git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@59679 65644016-39b1-43b1-bf79-96bc8fe82c15
Front ported fix for bug CORE-4444 : Engine could hung and block all attachments in out of disk space condition during physical backup


git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@59680 65644016-39b1-43b1-bf79-96bc8fe82c15
Front ported:
fix for bug CORE-4444 : Engine could hung and block all attachments in out of disk space condition during physical backup,
improvement CORE-4445 : Extend main database file faster when physical backup state changed from stalled to merge


git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@59681 65644016-39b1-43b1-bf79-96bc8fe82c15
Improvement CORE-2303: Include plan in MON$STATEMENTS.

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@59682 65644016-39b1-43b1-bf79-96bc8fe82c15
git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@59683 65644016-39b1-43b1-bf79-96bc8fe82c15
Fixed transactions leak caused by my recent commit

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@59684 65644016-39b1-43b1-bf79-96bc8fe82c15
Fixed CORE-4457 - DATEADD should support fractional value for MILLISECOND.

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@59685 65644016-39b1-43b1-bf79-96bc8fe82c15
nightly update

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@59692 65644016-39b1-43b1-bf79-96bc8fe82c15