Add VERSION number for each package

CPAN is now getting upset about it as it seems that v0.99 of
the release somehow did index all the packages in the single
file with the same version number. Now this needs to be
explicit.
Minor updates to Build.PL

Don't need abstract or version lines and fix repo location and
license version.
Must use explicit version numbers

Turns out Module::Build can't work out that the version of subclasses
inherits from $Starlink::AST::VERSION as it only pattern matches and
can't eval. Force explicit version numbers so that the generated
MYMETA file can receive real values.