Fixing AVG function tests: using CompareTo instead of Equals (to compare against unscaled values)
Fixing ADO.NET connection close error if broken
Implemented support for drive memory stat reporting
Fixes #DDB-18 (creation of external functions)
Fixes DDB-19
External function name adjusted to Assembly Qualified Name #DDB-18
Folder lib removed (outdated by NuGet)
Merge branch 'master' of github.com:deveel/deveeldb