(OVERLAY_START, OVERLAY_END, OVERLAY_VALID): New macros.
(OVERLAY_POSITION): Likewise.
(searchbuf): Decl deleted--doesn't belong here.
Delete include of regex.h for VMS.
wrong feature.
(Qoverwrite_mode_binary): New variable.
(internal_self_insert): If current_buffer->overwrite_mode is
`overwrite-mode-binary', do as overwrite_binary_mode used to.
(syms_of_cmds): Remove defvar of overwrite_binary_mode; initialize
Qoverwrite_mode_binary.
* buffer.c (syms_of_buffer): Doc fix for overwrite_mode.
* buffer.h (struct buffer): Doc fix.
and TEMP_SET_PT are function calls.
Similarly for BUF_SET_PT and BUF_TEMP_SET_PT.
Added DECLARE_INTERVALS to buffer structure to conditionally
compile an interval tree into it..