-fix bug in cache for atlas import/export

-fix some menus
-fixed bug in out transition curves
-detect and remove file:/// in collada
-remove multiscript for now
-remove dependencies on mouse in OS, moved to Input
-avoid fscache from screwing up (fix might make it slower, but it works)
-funcref was missing, it's there now

core/math/math_funcs.cpp

@@ -220,9 +220,16 @@ int Math::decimals(double p_step) {
 
 double Math::ease(double p_x, double p_c) {
 
+	if (p_x<0)
+		p_x=0;
+	else if (p_x>1.0)
+		p_x=1.0;
 	if (p_c>0) {
-
-		return Math::pow(p_x,p_c);
+		if (p_c<1.0) {
+			return 1.0-Math::pow(1.0-p_x,1.0/p_c);
+		} else {
+			return Math::pow(p_x,p_c);
+		}
 	} else  if (p_c<0) {
 		//inout ease