Log message:
Bump the PKGREVISIONs of all (638) packages that hardcode the locations
of Perl files to deal with the perl-5.8.7 update that moved all
pkgsrc-installed Perl files into the "vendor" directories.

Log message:
Turn PERL5_PACKLIST into a relative path instead of an absolute path.
These paths are now relative to PERL5_PACKLIST_DIR, which currently
defaults to ${PERL5_SITEARCH}.  There is no change to the binary
packages.

Log message:
Remove USE_BUILDLINK3 and NO_BUILDLINK; these are no longer used.

Log message:
since perl is now built with threads on most platforms, the perl archlib
module directory has changed (eg. "darwin-2level" vs.
"darwin-thread-multi-2level").

binary packages of perl modules need to be distinguishable between
being built against threaded perl and unthreaded perl, so bump the
PKGREVISION of all perl module packages and introduce
BUILDLINK_RECOMMENDED for perl as perl>=5.8.5nb5 so the correct
dependencies are registered and the binary packages are distinct.

addresses PR pkg/28619 from H. Todd Fujinaka.

Log message:
Initial import of Net::CIDR::Lite.

Net::CIDR::Lite is a Perl extension for merging IPv4/v6 CIDR addresses.
Faster alternative to Net::CIDR when merging a large number of CIDR address
ranges. Works for IPv4 and IPv6 addresses.