Fix: crmd: make lrm_state hash table not case sensitive

Thanks to inouekazu for helping debug and write this patch
Low: membership: make caching peers by uname case insensitive
Low: attrd: Make hostname hashtable case insensitive
Low: fencing: make hashtable mapping hostname->alias case insensitive for hostname
Merge pull request #462 from davidvossel/lrm-segfault

Fix: crmd: make lrm_state hash table not case sensitive