Previously, const-values output is not supported correctly as it is not
captured correctly as a dependency. The load of the input JSON file is
loaded via file system directly, that can cause issues like:
* False cache hit when the file is changed
* Cannot be prefix mapped to allow distributed caching
Try to support the input file by:
* Correctly capture the input
* Create a new driver flag `-const-gather-protocols-list` that can do
path remapping correctly in swift-driver
rdar://169109358
