Override main-entry, do not do anything special in it for now
Bug fix in KnobSerialization
Take into account for multiThreadNumCPUS the number of running
OfxThreads
Cache: never allocate images while under the lock, instead do it in the
caller thread afterwards
Adjust multithreaNCpu
Bug fix
Fix conflicts and merge with workshop
Fix deadlock + sigar use qint64 for total time