changed operators on classes that used linear_search (only used in string comparisons) git-svn-id: http://svn.code.sf.net/p/irrlicht/code/trunk@742 dfc29bdd-3216-0410-991c-e03cc46cb475
git-svn-id: http://svn.code.sf.net/p/irrlicht/code/trunk@643 dfc29bdd-3216-0410-991c-e03cc46cb475