Fix operator overloading under Perl 5.8.x
Fix operator overloading under Perl 5.8.x

Only turn it on when the class that the object belongs to actually
has overloading.

rectang/lucy-clownfish,nwellnhof/lucy-clownfish,rectang/lucy-clownfish,apache/lucy-clownfish,apache/lucy-clownfish,apache/lucy-clownfish,rectang/lucy-clownfish,apache/lucy-clownfish,rectang/lucy-clownfish,apache/lucy-clownfish,nwellnhof/lucy-clownfish,nwellnhof/lucy-clownfish,nwellnhof/lucy-clownfish,apache/lucy-clownfish,rectang/lucy-clownfish,rectang/lucy-clownfish,apache/lucy-clownfish,rectang/lucy-clownfish,nwellnhof/lucy-clownfish,rectang/lucy-clownfish,rectang/lucy-clownfish,nwellnhof/lucy-clownfish,nwellnhof/lucy-clownfish,apache/lucy-clownfish,nwellnhof/lucy-clownfish