KNOWN:

o switch -e: current code will set schedtool first to the desired mode, then 
execute the command. When using -3 | -B(atch) may lead to delay on a loaded 
machine.  

o Non-numeric arguments as PIDs are ignored; thus the program returns
with 0 == EXIT_SUCCESS, when all arguments are ignored due to wrong
input. The same is with schedtool -v, a perfect no-op.

o The #ifdef-stuff for affinity is an utter mess.
