STORM-132 sort supervisor by free slot in desending order
in EvenScheduler to schedule more evenly between supervisor
STORM-132 simplify code using sort-by function
Merge branch 'master' of https://github.com/apache/incubator-storm into STORM-132
Merge branch 'master' of https://github.com/apache/incubator-storm into STORM-132
modify EvenScheduler.clj sort-slots and add a test-sort-slots testcase
1. fix test case passed on original code; 2. use count-by
remove unnessery test and change port numbers order
Merge branch 'STORM-132' of https://github.com/xiaokang/incubator-storm into STORM-132

STORM-132: sort supervisor by free slot in desending order
Added STORM-132 to Changelog