This commit updates the test output for the updated NLL compare mode that uses `-Z borrowck=migrate` rather than `-Z borrowck=mir`. The previous commit changes `compiletest` and this commit only updates `.nll.stderr` files.
AscribeUserType
Also change the order of the fake read for let and the AscribeUserType, so that we use the better span and message from the fake read in errors.
These tests were disabled due to NLL bugs that have since been fixed.
