[el1p2c] Optional use of dune-pdelab + amg or SuperLU, now working if only one...

[el1p2c] Optional use of dune-pdelab + amg or SuperLU, now working if only one option is available, and message if both are missing.

Reviewed by alexk.

git-svn-id: svn://svn.iws.uni-stuttgart.de/DUMUX/dumux/trunk@12851 2fb0f335-1f38-0410-981e-8018bf24f1b0

test/geomechanics/el1p2c/test_el1p2c.cc

@@ -66,8 +66,8 @@ void usage(const char *progName, const std::string &errorMsg)
 
 int main(int argc, char** argv)
 {
-#if !DUNE_PDELAB_IS_PATCHED_FOR_DUMUX && !#HAVE_SUPERLU
-    std::cerr << "If you have either a patched dune-pdelab or SuperLU to run this test.\n" << std::endl;
+#if !DUNE_PDELAB_IS_PATCHED_FOR_DUMUX && !HAVE_SUPERLU
+    std::cerr << "You need to have either a patched dune-pdelab or SuperLU to run this test.\n" << std::endl;
     return 77;
 #else
     Dune::FMatrixPrecision<>::set_singular_limit(1e-22);