search&replace nqp::list -> nqp::qlist; change .push to nqp::push etc
so many search and replace. probably too many.
lots and lots of nqp::un/shift/push/pop.
final fixups
give qrpa the methods instead.
Merge branch 'futile_qrpa' into qrpa_experiment
Revert "give qrpa the methods instead."

This reverts commit 6c090d25ad4ff8b0fabd81e864361fdfa056a72a.
one last .pop
Revert "Revert "give qrpa the methods instead.""

This reverts commit ba6503cb118880bb94bb3d6a1c08434e9ec8c2c3.
Revert "Revert "Revert "give qrpa the methods instead."""

This reverts commit 06d8180e7a4331d0b397eaec1c6fbee5ef6e77de.
more stage0 updates.