Remove all getenv() calls, especially those wrapped by issetugid().

Remove all getenv() calls, especially those wrapped by issetugid().
getenv()'s wrapped by issetugid() are safe, but issetugid() is correct
difficult to impliment on many operating systems.  By accident, a grand
experiment was run over the last year, where issetugid() returned 1 (the
safe value) on a few operating systems.  Noone noticed & complained that
certain environment variables were not working.......
ok doug beck jsing, discussion with others