When there is a stable 6.4 branch in EJBCA, upgrade CESeCore.
[x] Add the new JAR-files
[x] Remove the old JAR-files, updates 12_cesecore.properties, pom.xml
[x] Try to compile, fix compilation errors
[x] Try to deploy and find out what needs to change, ie what to filter out. What mock implementations to add.
[x] Try to run the tests
[x] Manually test AdminGUI, query audit log, demo signing etc
[x] Check what the dependencies and their version was in fact used in 6.4.1 and possibly use the same versions or later