- fixed: Readonly pointers never were flagged as such.

- fixed: Assignment from a readonly to a read-allowed pointer must be an error.
- made GetDefaultByType a builtin so that it can do proper type assignment to the result, which for a function would be problematic in this case, even if automatic type deduction was implemented. Since this returns the class defaults which are not a real object, the result cannot be subjected to a type cast.
- error out if a type cast of a readonly pointer is attempted.
- fixed: FxBooleanNot could clobber a local variable because it used the source register to manipulate the result.

src/scripting/codegeneration/codegen.h

@@ -289,6 +289,7 @@ enum EFxType
 	EFX_NamedNode,
 	EFX_GetClass,
 	EFX_ColorLiteral,
+	EFX_GetDefaultByType,
 	EFX_COUNT
 };
 
@@ -1542,6 +1543,24 @@ public:
 	ExpEmit Emit(VMFunctionBuilder *build);
 };
 
+//==========================================================================
+//
+//	FxFlopFunctionCall
+//
+//==========================================================================
+
+class FxGetDefaultByType : public FxExpression
+{
+	FxExpression *Self;
+
+public:
+
+	FxGetDefaultByType(FxExpression *self);
+	~FxGetDefaultByType();
+	FxExpression *Resolve(FCompileContext&);
+	ExpEmit Emit(VMFunctionBuilder *build);
+};
+
 //==========================================================================
 //
 //	FxColorLiteral