Updated Firebird nuget.
Fixed #284.
Updated C++ example project.
Merge branch 'master' of https://github.com/igor-tkachev/bltoolkit

Conflicts:
	BLToolkit.2012.sln
	packages/FirebirdSql.Data.FirebirdClient.3.0.2.1/FirebirdSql.Data.FirebirdClient.3.0.2.1.nuspec
	packages/FirebirdSql.Data.FirebirdClient.3.2.0.0/FirebirdSql.Data.FirebirdClient.3.2.0.0.nuspec
	packages/FirebirdSql.Data.FirebirdClient.4.0.0.0/FirebirdSql.Data.FirebirdClient.4.0.0.0.nuspec