* tree-nested.c (convert_tramp_reference) <ADDR_EXPR>: Do not
	build a trampoline if we don't want one.
	* varasm.c (initializer_constant_valid_p) <ADDR_EXPR>: Do not
	return zero for nested functions if we don't want a trampoline.
ada/
	* trans.c (Attribute_to_gnu) <Code_Address>: Set TREE_NO_TRAMPOLINE
	instead of TREE_STATIC on the ADDR_EXPR.

From-SVN: r135884