moved provider options optimizations into runtime params enabled with WAN=1, added SEGMENT option for cluster segmentation.
Merge branch 'master' of https://github.com/mhess-connectify/mariadb55
fixed formatting and added new line characters
Merge branch 'master' of https://github.com/mhess-connectify/mariadb55
fixed passing of wsrep_provider_options
added set -u block

set -u forces all envars to be required
Fixes to SEGMENT and WAN params
Merge branch 'master' of https://github.com/mhess-connectify/mariadb55

Conflicts:
	mariadb-start
Merge pull request #4 from mhess-connectify/master

fixes to mariadb-start