Rebuilt for GCC 5 C++11 ABI change

Box2D.spec

@@ -1,6 +1,6 @@
 Name: Box2D
 Version:  2.3.1
-Release:  1%{?dist}
+Release:  2%{?dist}
 Summary: A 2D Physics Engine for Games
 
 Group: Development/Libraries
@@ -71,6 +71,9 @@ find %{buildroot} -name '*.a' | xargs rm
 
 
 %changelog
+* Sat May 02 2015 Kalev Lember <kalevlember@gmail.com> - 2.3.1-2
+- Rebuilt for GCC 5 C++11 ABI change
+
 * Fri Feb 20 2015 Lubomir Rintel <lkundrak@v3.sk> - 2.3.1-1
 - Update