Permission denied errors are now being ignored while reading the system catalog.

Other parts of the program will have to cope with the fact that not all data will
be available.

Close #4

pglablib/PgDatabaseCatalog.cpp

@@ -180,8 +180,12 @@ void load(Pgsql::Connection &conn, IPgContainter &pg_cont)
 	}
 	else {
 		auto details = result.diagDetails();
-
+		if (details.state == "42501") { // permission denied
-		throw std::runtime_error("Query failed\n" + details.errorMessage);
+			// ignore this for now
+		}
+		else {
+			throw std::runtime_error("Query failed\n" + details.errorMessage);
+		}
 	}
 
 }