Updated makefile.am such that "make check" will run all test programs. Fixed

a number of erronuous return values that made the script fail. What's left
is let Marc clean up the mess he made with t-eoReal and t-eoRealAllESAllAgain

eo/test/t-eoCheckpointing.cpp

@@ -180,5 +180,4 @@ int main(int argc, char **argv)
         cout << "Exception: " << e.what() << endl;
     }
 
-    return 1;
 }