t/pmc/threads.t: Need test for Clone of HLL info

[jkeenan]

This ticket moves into Trac discussion of an issue originally found in RT as  RT 41373.

In the original ticket, Will Coleda said such a test was needed to ... replace the TODO'd one which relied on non-core Perl5 PMCs.

Here's where the code starts:

831 pir_output_is(
832     <<'CODE', <<'OUTPUT', 'CLONE_CODE|CLONE_GLOBALS|CLONE_HLL|CLONE_LIBRARIES 
- RT #41373' );
833 .HLL 'Perl'
...

Note that the test is not currently TODO-ed out and is passing.

[whiteknight]

threading is gone. This ticket is invalid.