Add a way to update a code ref in an SC (for example, if dynamic compilation comes along and actually compiles the real thing).
Add a way to update a code ref in an SC (for example, if dynamic compilation comes along and actually compiles the real thing).

cygx/nqp,cygx/nqp,cygx/nqp,cygx/nqp,cygx/nqp,cygx/nqp,cygx/nqp,cygx/nqp