Fixed bug CORE-4144 : Error "context already in use (BLR error)" when preparing a query with UNION 

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@58392 65644016-39b1-43b1-bf79-96bc8fe82c15
Fixed bugs.core_1076: priorly user first/second/last names were limited to 32 chars, but now the limit is 31 chars. Restored length to 32.

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@58394 65644016-39b1-43b1-bf79-96bc8fe82c15
Make fb_shutdown() automatically invoked in any OS - to be checked by Vlad

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@58395 65644016-39b1-43b1-bf79-96bc8fe82c15
Avoid deadlock on Windows when DLL's is unloaded and fb_shutdown() was not called by application before FreeLibrary().
This decision is investigated and could be reworked if necessary.

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@58396 65644016-39b1-43b1-bf79-96bc8fe82c15
Updated the docs.

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@58400 65644016-39b1-43b1-bf79-96bc8fe82c15
Updated the docs.

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@58401 65644016-39b1-43b1-bf79-96bc8fe82c15