DirHandle - supply object methods for directory handles

SYNOPSIS

           use DirHandle;
           $d = new DirHandle ".";
           if (defined $d) {
               while (defined($_ = $d->read)) { something($_); }
               $d->rewind;
               while (defined($_ = $d->read)) { something_else($_); }
               undef $d;
           }

DESCRIPTION

       The DirHandle method provide an alternative interface to
       the opendir(), closedir(), readdir(), and rewinddir()
       functions.

       The only objective benefit to using DirHandle is that it
       avoids namespace pollution by creating globs to hold
       directory handles.