Fix bashism/typo in utility scripts.

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@60252 65644016-39b1-43b1-bf79-96bc8fe82c15
Fix IPv6V6Only comment in firebird.conf

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@60253 65644016-39b1-43b1-bf79-96bc8fe82c15
fix idpl license url

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@60255 65644016-39b1-43b1-bf79-96bc8fe82c15