merge-pod changes for cygwin and MSWin32 perl

merge-pod changes for cygwin and MSWin32 perl

On Windows, the git repository is checked out as CR-LF.
Tell perl to open the pod file with cr-lf as the end of line.

On Windows, the input file names are of the form podX\foo.pod.in.
Cygwin perl cannot parse the directory for the file name unless
the path separator is converted from \ to /.

Reviewed-on: http://gerrit.openafs.org/5113
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Tested-by: Jeffrey Altman <jaltman@openafs.org>
Reviewed-by: Jeffrey Altman <jaltman@openafs.org>
(cherry picked from 0b6247c27fcc0b8a2f307ccc545eea777a07f999)

Change-Id: Ifc4a649ee2b59115632f8d27a00b2bdb794822d1
Reviewed-on: http://gerrit.openafs.org/5141
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Tested-by: Jeffrey Altman <jaltman@openafs.org>
Reviewed-by: Jeffrey Altman <jaltman@openafs.org>