gcc: don't rename libiberty.h

This header is installed into a versioned location already,
and despite the comment we were not installing libiberty.a to begin
with.

Closes #33173.
gcc: update 4.9.1 bottle.

Closes #33184.

Signed-off-by: Misty De Meo <mistydemeo@gmail.com>
perlmagick: update hash, use sha256

Closes #33178.
perlmagick: update 6.89_1 bottle.