- includes regression test for fprintf and fscanf
- apparently you have to wrap __isoc99_fscanf instead of fscanf
  sometimes

- needs testing

- move fopen/fopen64 wrappers to stdio module
- make infrastructure for tracking stream pointers based on similar fd
  infrastructure in posix
- define placeholder record structs
- wrappers don't actually do anything yet

epilog will now skip on-node compression if only a single compute
node is used and will generate the final log file instead