mmstress: Cleanup && make use of tst_tmpdir

* Get rid of useless comments

* Simplify the code, so that alarm() sets only flag
  instead of exitting the test (so that we can cleanup
  the test temporary directory if -t parameter was passed)

* Make use of tst_tmpdir(), this fixes #87

Signed-off-by: Cyril Hrubis <chrubis@suse.cz>
1 file changed