Include an example to show how to use Visual Studio together with Open MPI.

When building Open MPI with CMake, a VS solution will be generated automatically, this solution can be directly used.
For the installer, it's a bit tricky, need to do more in NSIS config codes, in order to make the solution file aware the installation directory of user.

This commit was SVN r26616.

CMakeLists.txt

@@ -107,6 +107,7 @@ ADD_SUBDIRECTORY(opal)
 INCLUDE_DIRECTORIES (${LIBEVENT_INCLUDE_DIRS})
 ADD_SUBDIRECTORY(ompi)
 ADD_SUBDIRECTORY(orte)
+ADD_SUBDIRECTORY(test)
 
 END_CONFIGURE()
 

test/mpi/environment/CMakeLists.txt

@@ -7,6 +7,8 @@
 # $HEADER$
 #
 
+#PROJECT(CHELLO C CXX)
+
 SET(CHELLO_FILES
   chello.c
 )
@@ -14,3 +16,7 @@ SET(CHELLO_FILES
 ADD_EXECUTABLE (chello ${CHELLO_FILES})
 
 TARGET_LINK_LIBRARIES (chello libmpi)
+
+INSTALL(FILES ${OpenMPI_SOURCE_DIR}/test/mpi/environment/chello.c
+  ${OpenMPI_BINARY_DIR}/test/mpi/environment/chello.*
+  DESTINATION share/examples)