Merge pull request #4 from Schlupp77/master

Typ "float" hinzugefügt
MySql fix...
MySQL fix
Fixes...
Firebird fixes...
MySQL fix -> Rename Primary Key
Firebird Drop database
Many fixes...
Migrator fixes...
Keyword fix
Re-factored Migrator.Providers/TransformationProvider.cs and added additional method ExecuteNonQuery which takes 3 parameters.
Last parameter is an object array of command parameters.
Re-factored ITransformationProvider.cs and added function string GenerateParameterName(int index) so that it is public available in a data base migration
Merge branch 'master' of https://github.com/jogibear9988/Migrator.NET
Extended ITransformationProvider and added new method RemovePrimaryKey(string table)
Re-factored NoOpTransformationProvider to implement extended ITransformationProvider
Extended ITransformationProvider and added new method RemoveAllIndexes(string table)
Re-factored NoOpTransformationProvider to implement extended ITransformationProvider
Extended Index.cs by an additional property PrimaryKey of type bool
Re-factored TransformationProvider and added implementation of ITransformationProvider functions RemovePrimaryKey and RemovedAllIndexes and fixed bugs in functions GetIndexes, GetConstraints, RemoveConstraints
Re-factored SQLiteTransformationProvider.cs and fixed a bug in function TableExists and overwrote functions GetPrimaryKeyConstraintName, RemovePrimaryKey, RemoveAllIndexes