add more flushs for output

this should make output less confusing if the stream caches some data...

examples/problems/co2injectionproblem.hh

@@ -357,7 +357,7 @@ public:
         // Write mass balance information for rank 0
         if (this->gridView().comm().rank() == 0) {
             std::cout << "Storage: liquid=[" << storageL << "]"
-                      << " gas=[" << storageG << "]\n";
+                      << " gas=[" << storageG << "]\n" << std::flush;
         }
     }
 

examples/problems/fractureproblem.hh

@@ -292,7 +292,7 @@ public:
         // Process with rank 0 informs about the total masses of all
         // components inside the domain
         if (this->gridView().comm().rank() == 0) {
-            std::cout << "Mass in domain: " << storage << std::endl;
+            std::cout << "Mass in domain: " << storage << std::endl << std::flush;
         }
     }
 

examples/problems/lensproblem.hh

@@ -377,7 +377,7 @@ public:
 
         // Write mass balance information for rank 0
         if (this->gridView().comm().rank() == 0) {
-            std::cout << "Storage: " << storage << std::endl;
+            std::cout << "Storage: " << storage << std::endl << std::flush;
         }
     }
 

examples/problems/obstacleproblem.hh

@@ -250,7 +250,7 @@ public:
             if (this->gridView().comm().rank() == 0) {
                 std::cout << "Storage in " << FluidSystem::phaseName(phaseIdx)
                           << "Phase: [" << phaseStorage << "]"
-                          << "\n";
+                          << "\n"  << std::flush;
             }
         }
 
@@ -261,7 +261,7 @@ public:
         // Write mass balance information for rank 0
         if (this->gridView().comm().rank() == 0) {
             std::cout << "Storage total: [" << storage << "]"
-                      << "\n";
+                      << "\n"  << std::flush;
         }
     }
 

examples/problems/powerinjectionproblem.hh

@@ -245,7 +245,7 @@ public:
 
         // Write mass balance information for rank 0
         if (this->gridView().comm().rank() == 0) {
-            std::cout << "Storage: " << storage << std::endl;
+            std::cout << "Storage: " << storage << std::endl << std::flush;
         }
     }
     //! \}