(w32_executable_type): Properly cast dos_header when

(w32_executable_type): Properly cast dos_header when
making size comparison.
(sys_spawnve): Update comments.
(sys_select): Ignore children dead children with pending input.
Delay sending SIGCHLD until all output has been read.
(sys_kill): Sleep to allow focus change events to propagate.
Use TerminateProcess on Win95.
(int_from_hex, enum_locale_fn, Fw32_get_valid_locale_ids):
New functions.
(Vw32_valid_locale_ids): New variable.
(Fw32_set_current_locale): Send message to input thread.
(syms_of_ntproc): defsubr Sw32_get_valid_locale_ids.