call pp_glob() even when its being skipped

Currently when an external Perl glob function is used (which is most of
the time), the OP_GLOB op is removed and replaced with the pair:
    GV("CORE::GLOBAL::glob"), ENTERSUB.

This commit re-adds the OP_GLOB to the op tree, but with OPf_SPECIAL set;
and pp_glob() is updated to just return if OPf_SPECIAL is set.

Thus there's no change in outward functionality with this commit. However,
by always calling pp_glob(), it will allow us (in the next commit) to
handle iterator overloading consistently, regardless of whether the
internal globbing function is used or not.

1 files changed, 1 insertions, 0 deletions

diff --git a/op.h b/op.h
index a55bb1e536..4d6229bf2c 100644
--- a/op.h
+++ b/op.h
@@ -146,6 +146,7 @@ Deprecated.  Use C<GIMME_V> instead.
 				    that was optimised away, so it should
 				    not be bound via =~ */
 				/*  On OP_CONST, from a constant CV */
+				/*  On OP_GLOB, use Perl glob function */
 
 /* old names; don't use in new code, but don't break them, either */
 #define OPf_LIST	OPf_WANT_LIST