Updated ELPA configuration scripts

cmake/tests/test_ELPA.cmake

 #First check if we can compile with ELPA
 try_compile(FLEUR_USE_ELPA ${CMAKE_BINARY_DIR} ${CMAKE_SOURCE_DIR}/cmake/tests/test_ELPA.f90
 LINK_LIBRARIES ${FLEUR_LIBRARIES})
-
 if (NOT FLEUR_USE_ELPA)
    if (DEFINED CLI_ELPA_OPENMP)
       set(TEST_LIBRARIES "${FLEUR_LIBRARIES};-lelpa_openmp")

cmake/tests/test_ELPA.f90

       program test
-      use elpa1
+      use elpa
       integer:: ierr,mpi_subcom, myrowblacs, mycolblacs
       integer:: mpi_comm_rows,mpi_comm_cols
+      ierr=elpa_init(20171201)
       end

external/elpa/install_elpa.sh

@@ -28,4 +28,7 @@ else
 fi
 FLEUR_LIBDIR="$PWD/INSTALL_DIR/lib $FLEUR_LIBDIR"
 FLEUR_INCLUDEDIR="$PWD/INSTALL_DIR/include $FLEUR_INCLUDEDIR"
- 
+if [ -r $PWD/INSTALL_DIR/lib/libelpa_openmp.a ]
+then
+CLI_ELPA_OPENMP=1
+fi