Add rename and remove to the C reserved symbol names list

This allows the new file methods to be named rename and remove instead of
renameFile and removeFile.  Adjusted the test files accordingly.
Merge pull request #229 from lydia-duncan/resolveCFunctionConflicts

Add rename and remove to the C reserved symbol names list [trivial]

This allows the new file methods to be named rename and remove instead of
renameFile and removeFile. Adjusted the test files accordingly.