Fix "find . -exec echo {}" segfault, and stop measuring environment space,

The segfault was spotted/fixed by Daniel K. Levy back in September, and again by
Isabella Parakiss yesterday. While we're there, remove the environment
size measurement code (the 128k limit was lifted by linux commit b6a2fea39318,
which went into 2.6.22 released July 2007).
1 file changed