2006-08-31  Sandra Loosemore  <sandra@codesourcery.com>

	* gcc/lto/lto.c (struct lto_context): Remove type field, add language.
	(lto_read_uleb128): Fix to assemble bytes in the correct order.
	(lto_read_sleb128): New.
	(lto_read_form): Make it know about some more attributes.  Make it
	understand DW_FORM_sdata and DW_FORM_udata.
	(lto_find_integral_type): New.
	(lto_read_compile_unit_DIE): Return tree instead of void.  Set the
	language in the context.
	(lto_read_array_type_DIE): New.
	(lto_read_enumeration_type_DIE): New.
	(lto_read_enumerator_DIE): New.
	(lto_read_variable_formal_parameter_constant_DIE): Return the decl
	instead of void.
	(lto_read_pointer_type_DIE): Return the type instead of void.
	(lto_read_subrange_type_DIE): New.
	(lto_read_base_type_DIE): Return the type instead of void.  Also,
	GCC generates unnamed base_type DIEs, so do something sensible if
	we get one.
	(lto_read_DIE): Change type to return the tree value constructed from
	reading the DIE.  Make the boolean "more" flag a parameter instead.
	Updated all callers.  Make it know about the readers for array_type,
	enumeration_type, and subrange_type, and enumerator DIEs.
	(lto_collect_child_DIEs): New.