First pass at using C API for MPI.  Compiles.
Factored queue test out into it's own routine.  Some MPI fixes.
Add nburn steps to examples.
Merge branch 'base' into mpic

Conflicts:
	.gitignore
	test/Makefile.am
Update to C MPI API, since C++ API is deprecated
Tests of fitsData and fitsDataDouble

* Add data_test to unit test fitsData, fitsDataDouble
* Added test images to test/testdata
* Fix error in fitsDataDouble where number of elements not set correctly.
* Add hasData methods to fitsData/fitsDataDouble