toke.c, op.c, sv.c: Prototype parsing and checking are nul-and-UTF8 clean.

toke.c, op.c, sv.c: Prototype parsing and checking are nul-and-UTF8 clean.

This means that eval "sub foo ($;\0whoops) { say @_  }" will correctly
include \0whoops in the CV's prototype (while complaining about illegal
characters), and that

use utf8;
BEGIN { $::{"foo"} = "\$\0L\351on" }
BEGIN { eval "sub foo (\$\0L\x{c3}\x{a9}on) {};"; }

will not warn about a mismatched prototype.