HCOLL-20 Improve TestCoverage of SHM
Merge remote-tracking branch 'origin/master'

Conflicts:
	collections/src/main/java/net/openhft/collections/VanillaSharedHashMap.java
Merge remote-tracking branch 'origin/master'

Conflicts:
	collections/src/main/java/net/openhft/collections/VanillaSharedHashMap.java