superenv: support PPC bottles

Allows for building bottles on PPC both with and without Altivec.
This is currently not active but will be enabled once superenv is
stable on Leopard.
dnscrypt-proxy 1.3.3

Fixes mistydemeo/tigerbrew#110.
polygen 1.0.6-20040628

polygen: a random phrases generator

Closes #21344.

Signed-off-by: Misty De Meo <mistydemeo@gmail.com>
uwsgi 1.9.14
yaz 4.2.65

Signed-off-by: Misty De Meo <mistydemeo@gmail.com>
metaproxy 1.3.60

Closes #22119.

Signed-off-by: Misty De Meo <mistydemeo@gmail.com>