make work if apache not working
first stab iterate on pids
properly make directory for each pid
(m) clean up
attempt to work with strace's stderr
Revert "attempt to work with strace's stderr"

This reverts commit 785aaabd785deb0486f995dbf43b2b37fd858bd6.
allow output options to take their own filename to get strace to wrk
strace mysql
strace wsgi apache
(m) clean up
clean up
make 'takes_own_filename' work with non-iter
fix file opening for non-iter