Added Indent extension method to Utilities.Core.StringUtils.cs and TestIndent unit test method to Utilities.Core.Tests.StringUtils.cs.  Added Instance static property and InitializeInstance static method to Utilities.Sql.SqlXmlSchemas.cs.  Added XmlValidationLocation enumeration to Utilities.Sql.SqlServerDatabase.cs (functionality not implemented yet).  Added GetNecessaryTargetLanguageBackingStoreDeclarations instance method to Utilities.Sql.Columns class in Utilities.Sql.SqlServerDatabase.cs.  Added DatabaseName, SchemaName, TableName, TargetLanguageBackingStoreIdentifier, TargetLanguageBackingStoreDeclaration, DoesTargetLanguagePropertyNeedBackingStore properties, and GetTargetLanguageBackingStoreDeclaration method to Utilities.Sql.Column class in Utilities.Sql.SqlServerDatabase.cs.  Refactored GetTargetLanguageProperty method and added private GetXmlValidatedPropertyForCSharp, GetXmlValidatedPropertyForFSharp, and GetXmlValidatedPropertyForVisualBasic methods to Utilities.Sql.Column class in Utilities.Sql.SqlServerDatabase.cs.
Utilities.Core.StringUtils.cs (StringUtils class): Refactored Indent method to return original string when it's a zero length string (previously the method would throw an exception).

Utilities.Core.Tests.StringUtils.cs (StringUtilsTests class): Changed TestIndent test method to reflect change in Indent method's behavior.

Utilities.Sql.SqlServerDatabase.cs (Columns class): Added PRIMARY_KEY_SCHEMA column to result set in constructor.

Utilities.Sql.SqlServerDatabase.cs (Column class): Added PrimaryKeySchema property to class.  Added PrimaryKeySchema property to GetKeyIdentificationComment method.  Added XmlValidationLocation logic to GetTargetLanguageProperty method.
Moved ItemNotFoundException class from Utilities.Sql.SqlServerDatabase.cs to Utilities.Core.Exceptions.cs.

Utilities.Sql.SqlServerDatabase.cs: Modified TargetLanguage enumeration values to reflect version numbers for C#, F# and VB.

Utilities.Sql.SqlServerDatabase.cs: Added TargetLanguageExtensionMethods class, and made several modifications to other code to use this class's extension methods.

Utilities.Sql.SqlServerDatabase.cs (Column class): Added code to GetTargetLanguageProperty to return a non-auto property if the current target language doesn't support auto properties.