Disallow retagging enums or using implicit-int as an enum tag.

sourcepawn/compiler/tests/fail-tag-enum-as-implicit-int.sp

@@ -0,0 +1,23 @@
+native Float:float(x);
+native Float:FloatMul(Float:oper1, Float:oper2);
+
+stock Float:operator*(Float:oper1, oper2)
+{
+  return FloatMul(oper1, float(oper2));
+}
+
+native Float:GetRandomFloat();
+
+enum _:Rocketeer {
+  bool:bActivated,
+  iRockets[20]
+};
+
+public OnPluginStart()
+{
+  decl Float:fAngles[3];
+
+  fAngles[0] = GetRandomFloat() * 360;
+  fAngles[1] = GetRandomFloat() * 360;
+  fAngles[2] = GetRandomFloat() * 360;
+}

sourcepawn/compiler/tests/fail-tag-enum-as-implicit-int.txt

@@ -0,0 +1 @@
+(11) : error 169: cannot tag an enum as implicit-int