Produce a simple configuration report at CMake invocation

Also removed explicit warnings messages. This warning had a spurious effects in IDE compilation (counted as compilation warnings for instance)

cmake/FindParMETIS.cmake

@@ -4,19 +4,19 @@ find_path(PARMETIS_INCLUDE_DIR parmetis.h
   PATH_SUFFIX include parmetis)
 
 if (EXISTS "${PARMETIS_INCLUDE_DIR}/parmetis.h")
-  message("-- Found parmetis.h in ${PARMETIS_INCLUDE_DIR}")
+  message(STATUS "Found parmetis.h in ${PARMETIS_INCLUDE_DIR}")
   find_library(LIB_PARMETIS parmetis)
   if("${LIB_PARMETIS}" STREQUAL "LIB_PARMETIS-NOTFOUND")
-    message(WARNING "Could not find parmetis library")
+    message("** Could not find parmetis library")
   endif()
   find_library(LIB_METIS metis)
   if("${LIB_PARMETIS}" STREQUAL "LIB_METIS-NOTFOUND")
-    message(WARNING "Could not find metis library")
+    message("** Could not find metis library")
   endif()
   set(PARMETIS_LIBRARIES ${LIB_PARMETIS} ${LIB_METIS})
-  message("-- Found parmetis/metis libraries ${PARMETIS_LIBRARIES}")
+  message(STATUS "Found parmetis/metis libraries ${PARMETIS_LIBRARIES}")
 else()
-  message(WARNING "Could not find parmetis.h")
+  message("** Could not find parmetis.h")
 endif()
 
 mark_as_advanced(PARMETIS_INCLUDE_DIR PARMETIS_LIBRARIES)