Enable superenv on Snow Leopard

This has been tested with several dozen formulae without any superenv-related issues.

Enable superenv on Snow Leopard
988316a1 · Misty De Meo · 3fd7da0d · 988316a1 · 988316a1
Commit 988316a1 authored 11 years ago by Misty De Meo
--- a/Library/ENV/3.2.6
+++ b/Library/ENV/3.2.6
+4.3
\ No newline at end of file
--- a/Library/ENV/4.2
+++ b/Library/ENV/4.2
+4.3
\ No newline at end of file