Building_vms_pcsi_kit

These are the files needed to build VMS distribution packages known as
PCSI kits.

Also minor update to the existing files, mainly to the documentation and
file clean up code.
packages/vms/Makefile.am: add latest file additions to EXTRA_DIST
mk-ca-bundle.1: don't install on make install

Since the mk-ca-bundle tool itself isn't installed with make install,
there's no point in installing its documentation.

Bug: http://curl.haxx.se/mail/lib-2013-08/0057.html
Reported-by: Guenter Knauf