Remove GV_ADDINEVAL
This flag does absolutely nothing. The use of 8 as a flag to pass to
gv_fetchpv was added in this commit:
commit
93233ece75d8fe98a77377e72c4d6004c5ea8691
Author: Chip Salzenberg <chip@pobox.com>
Date: Tue Mar 3 04:39:49 1998 +0000
[win32] merge problematic maintpatch to op.c
#77: "Eliminate double warnings under C<package;>"
Files: gv.c op.c toke.c
But nothing in gv.c made use of it at the time.
Later it was changed into a #define in commit
0f303493c6. Subse-
quently more uses were added in
77ca0c92 and
f558d5af04.
It still does nothing. Nothing outside the perl core references it.