nightly update

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@60108 65644016-39b1-43b1-bf79-96bc8fe82c15
Fixed search for free circullar buffer when using LWP number as thread id

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@60109 65644016-39b1-43b1-bf79-96bc8fe82c15
Misc const correctness - fixed warning

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@60111 65644016-39b1-43b1-bf79-96bc8fe82c15