Modify hashCode so that (a,b) and (b,a) have different hashCodes.
Modify hashCode so that (a,b) and (b,a) have different hashCodes.

xcv58/polyglot,blue-systems-group/project.maybe.polyglot,xcv58/polyglot,liujed/polyglot-eclipse,liujed/polyglot-eclipse,blue-systems-group/project.maybe.polyglot,liujed/polyglot-eclipse,blue-systems-group/project.maybe.polyglot,blue-systems-group/project.maybe.polyglot,xcv58/polyglot,xcv58/polyglot,liujed/polyglot-eclipse