Correct enum mappings for InList expression
AttributeMetadataProvider.GetMapValues requires improvements. Tests
Fixed #244.
Code cleanup.
Merge branch 'pr/n241_MaceWindu'
Commented #242 tests.
Fixed SL project.
Code cleanup.
Fixed #253.
Updated .gitignore.
Merge branch 'master' of https://github.com/igor-tkachev/bltoolkit

Conflicts:
	.gitignore
	Source/Data/Linq/Builder/ExpressionBuilder.SqlBuilder.cs

Unit Tests Code refactoring