[perl #49714] [PATCH] Extend perl6 spectest to fetch and execute S04-S29 tests

[Jerry Gay via RT]

applied as r24965.

it's causing a heck of a lot of failing tests. however, i'll leave them
in for a day or three, while we see what we can do to get them passing.

hint: getting 'fudge' working on rakudo would do us a world of good.
~jerry