buffers than the standard ones. 64kB appears to be enough for a stack in that case, but let's just go nuts and make the stacks enormous, so that it takes a few more doublings of X's stack needs before we run into this problem again. The VM system should take care of not actually using most of the memory anyway.

to help ease locking contention on Linux 2.4.

last thread exits the main proc, the remaining program ends up in the background and the program appears to have exited.