Automatic merge from branch-5.1

* origin/branch-5.1:
  Batch should set updated date to 0 on updated sources and Compute should update this sources for current project
  improve significantly memore consumption while using a disk cache
  catch Throwable instead of Exception in Computation threads

diff --cc server/sonar-server/src/main/java/org/sonar/server/computation/ComputationService.java
Simple merge