Changed the environment implementation to use __builtin._getenv and __builtin._putenv so that the real environment is queried and changed. There is still a local mapping for caching purposes, but it has a different format. The _main function neither receives nor passes along an environment mapping to the script main() or to the --execute code. NOTE: Both of the above have compat implications, so compat fallbacks have been added. Also added a kludge to the master_efuns stuff to use the versions from the right compat version. That's not entirely right, but it's a bit better at least. Rev: lib/master.pike.in:1.434