Kill trailing whitespace

Git hates trailing whitespace, so let's get this out of the way before
the real changes land.
Teach nrpe to stay in the foreground

Staying in the foreground makes it much easier to control this with
[supervisor](http://supervisord.org/) and friends.

I did not want to overload that `-d -s` business since we are not doing
AIX-y stuff here.
Kill compiler warnings