Fix CPAN runtime compatibility across threads - #951
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Implement B::SV address recovery for observed references, carry those addresses through ithread snapshots, account for parser-installed named subroutine stash ownership, and expose POSIX floating-point epsilon constants. Generated with Codex (https://openai.com/codex) Co-Authored-By: Codex <codex@openai.com>
Run the heavy pat and psycho cases in the exclusive test lane, and give their threaded variants plus speed_thr the same minimum timeout as their non-threaded counterparts. Generated with [Codex](https://openai.com/codex) Co-Authored-By: Codex <codex@openai.com>
Keep origin's runtime-scoped B object registry as the primary lookup and fall back to the inherited-address map for ithread-cloned referents. Generated with [Codex](https://openai.com/codex) Co-Authored-By: Codex <codex@openai.com>
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Redirect each jperl test subprocess from the platform null device so GNU timeout process groups cannot be stopped by SIGTTIN during interactive runs. Generated with [Codex](https://openai.com/codex) Co-Authored-By: Codex <codex@openai.com>
Keep origin's hash-backed B::SV::object_2svref implementation and remove the obsolete pre-rebase definition whose warning contaminated core test output. Generated with [Codex](https://openai.com/codex) Co-Authored-By: Codex <codex@openai.com>
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Summary
B::SV::object_2svrefusing an interpreter-local weak address registryCLONEhooksrefaddrPOSIX::DBL_EPSILONandPOSIX::LDBL_EPSILONVerification
make./jcpan -t Crypt::Rijndael::PP— 29 files, 32 tests, PASS./jcpan -t Math::Numerical— 5 files, 31 tests, PASS./jcpan -t Chemistry::3DBuilder— 2 files, 14 tests, PASS./jcpan -t Date::Gregorian— 9 files, 719 tests, PASSNo distribution preferences were added. Chemistry already worked through the existing dependency resolver; the fixes are shared compiler/runtime/tooling changes.