pagespeed/ngx_pagespeed — pull request #862 by jeffkaufman (2014-12-17 17:52:07+00:00)
Title: testing: give '-p' to mkdir

rm won't remove the containing directory if a file is removed out from under it, which means the directory will still be there but will be empty. This is not a problem, so pass '-p' to not fail on already existing directories.

This fixes problems like:

```
rm: cannot remove ‘/home/jefftk/ngx_pagespeed/test/tmp/nginx.pid’: No such file or directory
check mkdir /home/jefftk/ngx_pagespeed/test/tmp
mkdir: cannot create directory ‘/home/jefftk/ngx_pagespeed/test/tmp’: File exists
```