ROOT Tutorials: SQL Data Bases interfaces

1. sqlcanvas.C This is slight modification of ntuple1.C example.
2. sqlcreatedb.C Create a runcatalog table in a MySQL test database.
3. sqlfilldb.C Fill run catalog with nfiles entries
4. sqlselect.C localhost/test","nobody", "");
5. sqltables.C This is an example illustrating how the TSQLFile class can be used.