* config/m68k/tm-m68kv4.h (DWARF_REG_TO_REGNUM): Define to
correctly map floating point registers numbers.
* dwarfread.c (locval, new_symbol): Handle variables that are
optimized out.
* mdebugread.c: Replace all uses of builtin_type_* with
mdebug_type_*. Define and initialize mdebug_type_*.
* serial.h (serial_close): Add additional argument `really_close'.
(SERIAL_CLOSE): Update serial_close call accordingly.
(SERIAL_UN_FDOPEN): Use serial_close to handle refcnt properly.
* serial.c (serial_close): Handle `really_close'.
* serial.h (scb_base): Moved to serial.c, made static.
* valops.c (value_addr): Don't coerce arrays.
(typecmp): Coerce arrays instead of calling value_addr if necessary.