Merge topic 'clean-up-cmListFileArgument'

782657db cmListFileArgument: Remove FilePath member.
a863c59f cmMakefile: Use GetExecutionFileStack method.
076760a6 cmMakefile: Add filename context to ExpandArguments.
569f4785 cmFunctionCommand: Store the FilePath when creating the prototype.
f971ab04 cmMacroCommand: Store the FilePath when creating the prototype.