continuation mark function marks non pobj PackFile_ByteCode *seg

[jessevdam]

The continuation mark function marks(Parrot_gc_mark_PObj_alive) a non pobj. The ATTR seg is a PackFile_ByteCode which is not a pmc.

I added patch which removes the specific mark, but I do not know whether there are any memory leaks or other problems.

I also added a patch which allows you to check whether any non pobj are passed into the gc function which expects pobj objects. I ran the test on r41260 and did not find any other non pobj being but into the gc functions.

[jessevdam]

unchecked fix for faulty mark in continuation.pmc

[jessevdam]

checking for pobj

[NotFound]

No need to keep the comment, when packfile segments becomes gcable, all usages will be reviewed anyway.

Deleted the mark in r41262, thanks!

[bacek]

Patch applied. Resolving ticket.