The printing of 64bit diff's for the timestamp did not work on ARM
so I have changed this to 32bit. A 32bit nano-second diff between
events should be more than enough time.
Print '____' for POSIX thread output.
Methods to print the data were moved from capture-cli into
a support area and are no longer static so that they can
be shared by test routines, or application code that wants
to use the capture engine without the shell interface.
