VMS help for File::Path 2.00_11: chdir() is finicky about directory

VMS help for File::Path 2.00_11:  chdir() is finicky about directory
format; catdir spews warnings when given files that aren't directories;
File::Spec functions may call stat(), thus zapping C<_>; filenames with
characters that need escaping (such as spaces), must have some path
syntax attached to them and be converted to native syntax in order to
force escaping to take place.

p4raw-id: //depot/perl@31843