Changed the interpretation of MaterialTypeParam==0 in transparent materials. Before, it was interpreted as 0.5, now it's used as 0 (perfectly smooth transparency). This is slower than the old value, but you can achieve the same effect by specifying 0.5 as MaterialTypeParam.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@1512 dfc29bdd-3216-0410-991c-e03cc46cb475