Merged modules bonita-log:
- bonita-log-model into bonita-log-api
- bonita-log-model-impl into bonita-log-impl
Merged modules bonita-log:
- bonita-expression-model into bonita-expression-api
- bonita-expression-model-impl into bonita-expression-api-impl
BS-9861, changed randomly-failing test on system comment to not suppose a default order on search result
BS-9304 : [6.3] Temporary folder never get cleared

- Revert some modifications to load just one time the XSD
-> After the running of the BusinessArchiveTest, 2 tempBusinessArchive_ folder are not deleted, but I don't know why.
Merge branch '6.3.x' into MasterBugFixing

Conflicts:
	bpm/bonita-core/bonita-process-definition/bonita-process-definition-api/pom.xml
	bpm/bonita-core/bonita-process-definition/bonita-process-definition-impl/pom.xml
	bpm/bonita-core/bonita-process-instance/bonita-process-instance-model-impl/pom.xml
	bpm/bonita-core/bonita-process-instance/bonita-process-instance-model/pom.xml
	services/bonita-expression/bonita-expression-model-impl/pom.xml
	services/bonita-expression/bonita-expression-model/pom.xml
	services/bonita-expression/pom.xml
	services/bonita-log/bonita-log-api/pom.xml
	services/bonita-log/bonita-log-impl/pom.xml
	services/bonita-log/bonita-log-model-impl/pom.xml
	services/bonita-log/bonita-log-model/pom.xml
	services/bonita-log/pom.xml