more docs on the docid mapper impl.
fix comment error.
fix tabs and spaces.
Added the ability to intercept the event, that the ZoieSegmentReader is
not used anymore
changed groupid
upgrade fast util
Modified the Hourglass class to accept listeners after creation
Merge branch 'master' of https://github.com/wonlay/zoie
Merge remote branch 'jko/master'
Fixed the performance issue. Creating IndexWriterConfig each time we open the indexwriter consumes lots of cpu resources
Merge remote-tracking branch 'vl/master'
chang metrics-core version to get rid of build dependency
Merge remote-tracking branch 'r/master'
LuceneIndexDataLoaders now kick off a purge job to clean up the search index. Also improved the purge integration
Improvements in the scheduled purge. Sometimes we will need to reload & swap the index to take care of the facets as well.
.
Changing group id
Backwards compatible hourglass constructors
Merge branch 'bugfix' into cnc
Merge branch 'master' of github.com:linkedin/zoie into cnc-merge

Conflicts:
	pom.xml
	zoie-core/pom.xml
	zoie-core/src/main/java/proj/zoie/impl/indexing/ZoieSystem.java
	zoie-core/src/main/java/proj/zoie/impl/indexing/internal/DiskLuceneIndexDataLoader.java
	zoie-example/pom.xml
	zoie-jms/pom.xml
	zoie-parent/pom.xml
	zoie-perf/pom.xml
	zoie-server/pom.xml
	zoie-solr/pom.xml