* search.c (shared_member_p): New function.
(lookup_field_r): Use it.
* cp-tree.h (SHARED_MEMBER_P): Remove.
* method.c (process_overload_item): Handle template-dependent array
bounds.
* pt.c (type_unification_real): If we end up with undeduced nontype
parms, try again.
* decl.c (lookup_name_real): Tweak warning to refer to decls, not
types.
* typeck2.c (friendly_abort): Don't say anything if we have
earlier errors or sorries.
* decl.c (check_tag_decl): Notice attempts to redefine bool and
wchar_t. Ignore if in_system_header.
* decl.c (maybe_push_cleanup_level): New fn...
(start_decl_1): ...split out from here.
* cvt.c (build_up_reference): Use it.
* cp-tree.h: Declare it.