Remove vestigial files from Slurm User Group Meeting 2010
Add Slurm User Group 2013 information (incomplete)
Add sanity check for NULL cluster names trying to register.
Priority multifactor - add missing variable definitions just to be safe.
Merge remote-tracking branch 'origin/slurm-2.5'

Conflicts:
	src/plugins/priority/multifactor/priority_multifactor.c