Merge pull request #3878 from yosefe/topic/news-v1.6.0-rc5

NEWS: Update to v1.6.0-rc5

NEWS

@@ -7,7 +7,7 @@
 ##
 #
 
-## 1.6.0-rc4 (June 27, 2019)
+## 1.6.0-rc5 (July 13 , 2019)
 Features:
 - Modular architecture for UCT transports
 - ROCm transport re-design: support for managed memory, direct copy, ROCm GDR
@@ -40,6 +40,7 @@ Bugfixes:
 - Fix perftest warmup iterations to be non-zero
 - Fixing default values for configure logic
 - Fix race condition updating fired_events from multiple threads
+- Fix madvise() hook
 
 Tested configurations:
 - RDMA: MLNX_OFED 4.5, distribution inbox drivers, rdma-core 22.1