interfaces to variants of select() system call, "myselect.h".  This includes
adding fileno() methods to files, sockets and stdwin.

arguments crashed in INCREF() calls which should be XINCREF() calls.

timemodule.c: fix for SEQUENT port (sys/select, struct timezone) by
Jaap Vermeulen

xxobject.c: include modsupport.h

  -1 for errors)

default DATE is now 3 Jun 1992

guess raw file parameters, add Rate menu, call SOX to convert
file types or sampling rates that sfplay doesn't support.