Remove xref code.

	Remove xref code.
	* xref.c, xref.h: Remove file.
	* Make-lang.in (java/xref.o): Remove.
	* java-tree.h (flag_emit_xref, do_not_fold): Remove declaration.
	* lang.c (flag_emit_xref): Remove definition.
	* parse.h (DECL_END_SOURCE_LINE, DECL_INHERITED_SOURCE_LINE): Remove.
	* typeck.c (convert): Remove use of do_not_fold.
	* parse.y (do_not_fold): Remove definition.
	(parser grammar): Remove xref code.
	(maybe_create_class_interface_decl, create_class): Likewise.
	(register_fields, method_header, finish_method_declaration): Likewise.
	(declare_local_variables, source_end_java_method): Likewise.
	(java_complete_expand_classes): Do not set do_not_fold.
	(java_complete_expand_method): Remove xref code.
	(java_expand_classes, resolve_field_access, patch_invoke): Likewise.
	(java_complete_tree, java_complete_lhs, patch_assignment): Likewise.
	(patch_binop, build_string_concatenation, patch_array_ref): Likewise.
	(patch_synchronized_statement, patch_throw_statement): Likewise.
	(maybe_build_class_init_for_field): Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@95965 138bc75d-0d04-0410-961f-82ee72b054a4