Refactor outer_ctx handling a bit in HLL::Compiler.
Refactor outer_ctx handling a bit in HLL::Compiler.

cygx/nqp,cygx/nqp,perl6/nqp-rx,cygx/nqp,cygx/nqp,cygx/nqp,cygx/nqp,cygx/nqp,cygx/nqp,perl6/nqp-rx