global_replica_status.sh v1.1.0:
* Moved sdp_hosts.cfg config file to /p4/common/config, with optional
override by speciffying P4CCFG variable.
* Changed recommended command line for crontab to suggest '-E'
(always send emails) rather than '-e' (email on error only).
* Enhanced docs.
Added new P4CCFG setting to p4_vars.template, with value /p4/common/config.