Move some globals and all stuff pulling in crypto to the
server/serverutil.cpp file
Remove dead code.
Move several items that were used in only one place to the respective
files using them.
Move the class WaitUntilFinishedHelper into its own file.
Made sure no header includes utils.h
remove a handfull of files including utils.h for nothing.
The test assumed at least 2 cores, if you go below that (as the CI
dockers did) then we need to be aware of race-conditions when checking
on the status of the validation.
TomZ