static user probes

[Stan Cox]

Stan Cox wrote:
> Roland McGrath wrote:
> 
> Is this really how you have to do it?  This interposes dtrace into the
> build process for each relocatable file.  I would have expected just one
> post-processing step on the final executable.

That is the process described at:
   http://docs.sun.com/app/docs/doc/817-6223/6mlkidls5?l=en&a=view
  It modifies the call to the probes in the object files, leaving space
  for reinsertion.   hello.gcc.o is from 'gcc hello.c' and
  hello.dtrace.o/helloprobes.o are from 'dtrace -G -s helloprobes.d hello.o'