Fix CPAN compiler and XS tooling compatibility

[fglock]

Summary

• fix compile-time source-filter handling and provide pure-Perl XS overlays for the Marlin dependency chain
• recover references from B addresses, including Scalar::Util::refaddr identities across compiler/runtime threads
• prefer the targeted bundled Module::Build compatibility layer during jcpan runs and report explicit target failures correctly
• defer unsupported dynamic-regex callbacks until use and add a JDK Kerberos backend for Authen::Krb5::Simple

Validation

• make — passed
• system Perl: 5 regression files, 13 tests — passed
• Marlin::X::Clone — 3 files, 8 tests passed
• Class::XSConstructor — 27 files, 134 tests passed
• B::Hooks::AtRuntime::OnlyCoreDependencies — 3 files, 12 tests passed
• App::calendr — target tests passed
• Hades::Realm::OO — 5 files, 40 tests passed
• Authen::Simple::Kerberos — functional target test passed

Net::FS::Flickr and Sys::GetRandom::PP were excluded because they also fail under system Perl. Neither system Perl nor PerlOnJava reached App::upf target tests within the bounded dependency-resolution run; PerlOnJava progressed through the same large Data::Sah/Perinci graph without exposing a compiler/runtime failure.

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