Fixes regression bug from removing brackets from PrimaryKey columns. Columns are now passed and syntax specific brackets are added.
Moving the MySql special case for updating User Id from one to zero.
Refactoring the current sql syntax providers to better work with sql ce, sql server and mysql.
Adding migrations for v4.8 and v6.0.
Adding test cases for upgrading from 4.7 to 6.0 for the 3 database providers - sql ce, sql server and mysql.
Adding product name to the MigrationAttribute, which adds more flexibility to the MigrationRunner.
Fixing schema creation for mysql, which broke during a previous refactor task.
Adding DatabaseContext hooked up to UmbracoContext and initialized through the CoreBootManager.
Adding constant for ConnectionString name in GlobalSettings.
Adding extension method to get all properties for interfaces in PetaPoco used for mapping.
Creating ServiceContext and adding it to the UmbracoContext to provide access to the various services.
Adding UmbracoContext to BaseDatabaseFactory test.
