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(UPPERCASEP, LOWERCASEP, NOCASEP, UPCASE, UPCASE1, DOWNCASE)
(DOWNCASE_TABLE): Case tables are now char-tables.
(Vascii_upcase_table, Vascii_canon_table, Vascii_eqv_table):
Declarations deleted.

(CHAR_TABLE_STANDARD_SLOTS): Add one.

(CHECK_VECTOR_OR_CHAR_TABLE): New macro.

(struct Lisp_Char_Table): New structure.

(CHAR_TABLE_STANDARD_SLOTS, CHAR_TABLE_ORDINARY_SLOTS): New macros.
(CHAR_TABLE_EXTRA_SLOTS): New macro.

(CHECK_CHAR_TABLE): New macro.

(pvec_type): Add PVEC_CHARTABLE and PVEC_BOOLVECTOR.
Move PVEC_BUFFER to a higher bit.
(CHARTABLEP, GC_CHARTABLEP, XSETCHARTABLE, XCHARTABLE): New macros.
(XBOOLVECTOR, XSETBOOLVECTOR, BOOLVECTORP, GC_BOOLVECTORP): New macros.

(Vprefix_arg): Deleted; now part of struct kboard again.
(Funiversal_argument, Fnegative_argument, Fdigit_argument)
(clear_prefix_arg, finalize_prefix_arg): Deleted.

(Fupcase_initials, Fupcase_initials_region): Likewise.
(Fplist_get, get_local_map, Fx_popup_menu, Fx_popup_dialog): Likewise.
(Fframe_first_window): Likewise.

(Fprevious_single_property_change, Fend_of_line, Felt): Ditto.
(Fforward_line, Fforward_word, Fdelete_region, Fforward_char): Ditto.
(Fnarrow_to_region, Fwiden, Fmatch_beginning, Fmatch_end): Ditto.
(Fskip_chars_forward, Fskip_chars_backward): Ditto.
(Ffile_name_absolute_p, read_doc_string): Ditto.
(get_frame_param, store_frame_param, store_in_alist): Ditto.
(describe_map_tree): Declaration moved here from keymap.c.

(union Lisp_Misc): Delete the `type' field.
Use XMISCTYPE instead of that.

Lisp_Misc_Kboard_Objfwd, Lisp_Kboard_Objfwd, XKBOARD_OBJFWD, KBOARD_OBJFWDP,
GC_KBOARD_OBJFWDP, kboard_locked, the_only_kboard, DEFVAR_KBOARD): Renamed
from PERDISPLAY, MULTI_PERDISPLAY, current_perdisplay, all_perdisplays,
Lisp_Misc_Display_Objfwd, Lisp_Display_Objfwd, XDISPLAY_OBJFWD,
DISPLAY_OBJFWDP, GC_DISPLAY_OBJFWDP, display_locked, the_only_perdisplay,
DEFVAR_DISPLAY.  All uses changed.
(struct KBOARD): New member reference_count.
(initial_kboard): Declare this var.

kbd_macro_ptr, kbd_macro_end, kbd_macro_bufsize.

prefix_partial.  Delete Vcurrent_prefix_arg and Vprefix_arg; those are now
plain vars again.

Delete obsolescent members kbd_buffer_frame_or_window, kbd_buffer,
kbd_fetch_ptr, kbd_store_ptr; these are regular vars again.

Define internal_last_event_frame only #if MULTI_FRAME.
Add placeholders so we don't need to rebuild every time this struct changes.

(struct PERDISPLAY): New member next_perdisplay.