Implementation of null region insertion using intrinsics.

TODO:
1) Develop fastRPC wrappers to allow testing on all of native, target and simulator.
2) Remove any possible dependancy on immotion so that code may be exported to other projects.

Notes:
In order to do 1), there is a need for a common test frame work for HEXAGON SDK, this is
to avoid copying code that would be common to most tests, such as command line processing
and launching threads at simulator startup. It is ideal to implement such a framework before 
attempting 1.