* cp-tree.h (DECL_CLONED_FUNCTION_P): Check DECL_LANG_SPECIFIC.
	* mangle.c (write_function_type): Change prototype.
	(write_encoding): Don't mangle return types for
	constructors or destructors.
	(write_type): Adjust call to write_function_type.
	* pt.c (instantiate_template): Instantiate alternate entry points
	when instantiating the main function.

From-SVN: r35916