uses Params::Validate; should use Params::ValidationCompiler

[karenetheridge]

The documentation at https://metacpan.org/pod/Params::Validate#DESCRIPTION asserts that PVC is preferred to PV (same author for both). I leave this issue here in case someone driving by has the ambition to submit a patch for the change; who knows, at some point it might even be me :)

[rjbs]

This sounds fine if somebody does this and it breaks nothing, but it's worth noting that the big win of Params::ValidationCompiler, as far as I understand it, is efficient re-use. In general, GLD is called once in a process, so making the validator efficient to call 100 times is not much of a win.