MueLu: added no reuse to reuse loop in StandardReuse

This is mostly for extra information. For instance, running 2D laplacian
produces

Setup #1: no reuse                  0.02187 (1)
Setup #2: reuse none                0.01018 (1)
Setup trilinos#3: reuse smoothers           0.01025 (1)
Setup trilinos#4: reuse tentative P         0.006917 (1)
Setup trilinos#5: reuse smoothed P and R    0.002708 (1)

This means that about 50% of no reuse time is actually spent in the
interpreter, and the real construction time take 50%. This also shows
that there is no reuse happening in smoothers which could not be seen if
one only compare #1 and trilinos#3.

packages/muelu/example/advanced/multiplesolve/StandardReuse.cpp

@@ -406,9 +406,10 @@ int main_(Teuchos::CommandLineProcessor &clp, int argc, char *argv[]) {
   // Setup #2-inf (reuse)
   // =========================================================================
   std::vector<std::string> reuseTypes, reuseNames;
-  reuseTypes.push_back("S");  reuseNames.push_back("smoothers");
-  reuseTypes.push_back("tP"); reuseNames.push_back("tentative P");
-  reuseTypes.push_back("RP"); reuseNames.push_back("smoothed P and R");
+  reuseTypes.push_back("none"); reuseNames.push_back("none");
+  reuseTypes.push_back("S");    reuseNames.push_back("smoothers");
+  reuseTypes.push_back("tP");   reuseNames.push_back("tentative P");
+  reuseTypes.push_back("RP");   reuseNames.push_back("smoothed P and R");
 
   for (size_t k = 0; k < reuseTypes.size(); k++) {
     out << thickSeparator << " " << reuseTypes[k] << " " << thickSeparator << std::endl;