Tries to determine if C<$path> (or cwd if not supplied)
looks like a checkout. Any leading lib or blib components
will be removed, then the directory produced will be checked
-for the existance of a C<< dist_indicator_file_list() >>.
+for the existence of a C<< dist_indicator_file_list() >>.
If one is found, the directory will be returned, otherwise false.