Increased the plan buffer size in ISQL to accomodate the detailed plan output.

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@58463 65644016-39b1-43b1-bf79-96bc8fe82c15
Fix CORE-4153 - write out changes to firebird.conf before starting the server

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@58466 65644016-39b1-43b1-bf79-96bc8fe82c15
Simplest solution for CORE-4165: Replace the hierarchical union execution with the plain one.

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@58467 65644016-39b1-43b1-bf79-96bc8fe82c15
Cleanup.

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@58468 65644016-39b1-43b1-bf79-96bc8fe82c15
A bit more information for the plan.

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@58469 65644016-39b1-43b1-bf79-96bc8fe82c15