* This way the MPI parts of CDI can be compiled without introducing
  an artificial MPI dependency for non-MPI parts.

* This exercises the code for which a bug was introduced in r3181 and
  fixed in r3200.

* This change creates an archive containing resource_unpack.c only for
  use in test programs.

* This test currently only checks if a single missing value is
  successfully written out and counted on input.

* Also change zaxisCompareP to return 1 on differences.

* Also compare uuid in grid comparison.

* Also extend corresponding resource copy test.

* Add proper formatting of example program output.
* Add test to ensure the examples are working.
* Add better handling of Pointer arguments.
* Add better handling of C char * return values.
* Add helper function for C character length.
* Test that the compiler properly support Fortran/C interop at configure
  time.

The current code has a potential problem when checksums are computed
for objects larger than 32bit allows for.

* This is part of the bits needed to facilitate multiple/incremental
  resource updates on I/O servers.

* Also add code to test for it with valgrind.

* This also changes the destruction of resource lists, i.e. lists that
  were not explicitly created must not be deleted.

* Also declare functions not directly called static.

* And use that if available.