definingDeclsNames
Merge remote-tracking branch 'osandbu/ghc-api' into ghc-api
"Buildable" implementation for addItemsToImport.
Merge remote-tracking branch 'alanz/ghc-api' into ghc-api
Snapshot before merging frsoares
Merge remote-tracking branch 'frsoares/ghc-api' into ghc-api
All tests now pass for addImportSpec using the TokenUtils
New addItemsToImport and addHiding, and tests for addItems.

Both functions now work through the same helper function, addItemsToImport'.

addItemsToImport' implementation is a rewrite of addHiding. It still needs a lot of refactoring.
Merge remote-tracking branch 'alanz/ghc-api' into ghc-api

Conflicts:
	test/TypeUtilsSpec.hs
Added more tests for addItemsToImport.