Refactor primitive(File,Line,Column)
Refactor primitive(File,Line,Column)

Using `maybe` makes many functions much shorter and hopefully more
manageable. Generally speaking, it allows us to remove case statements
over Maybes.

eriksvedang/Carp,eriksvedang/Carp,carp-lang/Carp,carp-lang/Carp,carp-lang/Carp