PDI-9393 : Complete logging backward compatibility with 4.x
Fix Kettle5 compatibility issue wrt to logging
Merge branch 'master' of https://github.com/pentaho/pentaho-platform

Conflicts:
	extensions/src/org/pentaho/platform/plugin/action/kettle/KettleSystemListener.java
Final cleanup of the Platform Kettle component for PDI v5
PDI-9393 : Complete logging backward compatibility with 4.x