Perl v5.16R0, VMS and others docs issues

Hi!

Perl v5.16R0 links README[.](.*) docs from pod/perl$1.pod, but not for perlvms.pod,
because perlvms.pod already exist.

pod/perlvms.pod and README.vms are different docs. So, README.vms is not installed with the distribution, only perlvms.pod.

Another issue (?) is README.micro. It still exists, but is not linked by perl.pod, and therefore perlmicro.pod is not generated.


JF^D