[OSSIM] ossim test-data access.

[Ed L. <ewl...@co...>]

Hi. I've three very minor ossim patches I'd like to test and push. Or 
push and test. What is the standard test procedure? Do ossim developers 
typically run the test suite locally, or let your Jenkins server handle 
it? To me the https://github.com/ossimlabs/ossim/blob/master/README.md 
is not at all clear. Neither is ossim-batch-test --help.

What I (think I) have done:
1. Enabled HDF5 as an OPTION (rather than just an environment variable) 
in ossim/CMakeLists.txt
2. Added include_directories( ${MPI_CXX_INCLUDE_DIRS} 
${MPI_C_INCLUDE_DIRS} ) in ossim/CMakeLists to enable MPI on Fedora 32 
(and perhaps others).
3. Taken ossimRpcModel's destructor public, as ossimRpcModel is a 
concrete base class (I've an application that uses it as such).

Thanks!