@feelpp/lrz added automatic scheduler script generation for loadleveler (as
well as slurm and ccc) 
enable using FEELPP_ENABLE_SCHED_LOADLEVELER
@feelpp/lrz added automatic configuration for lrz/supermuc
and use new FEELPP_ENABLE_SCHED_* options
added SCRATCH, if found use it for the logfiles
tested lrz configuration and fixed ll script files
@feelpp/lrz tested and fixed loadleveler script generation