* Makefile.in (tree-inline.o): Depend on newly-included headers.
* tree-inline.c: Include headers needed for the functions moved in.
(struct inline_data, INSNS_PER_STMT): Moved from cp/optimize.c.
(remap_decl, remap_block, copy_scopy_stmt, copy_body_r): Likewise.
(copy_body, initialize_inlined_parameters): Likewise.
(declare_return_variable, inlinable_function_p): Likewise.
(expand_call_inline, expand_calls_inline): Likewise.
(optimize_inline_calls, clone_body): Likewise.
(walk_tree, walk_tree_without_duplicates): Moved from cp/tree.c.
(copy_tree_r, remap_save_expr): Likewise.

From-SVN: r46023