0.8.5.27:

0.8.5.27:
	SB-{POSIX/BSD-SOCKETS} cleanups
	... make sb-bsd-sockets-tests depend on sb-posix so we can check
		to see if /dev/log is actually a socket;
	... test that /, not /root, is not writeable by others;
	... (taking advantage of our 0.x version number) alter
		SB-POSIX:S-ISFOO to use the BOOLEAN alien type, rather
		than MODE-T -- the point being that the macros have no
		function other than returning a boolean.  Adjust
		the sb-posix manifesto too, to document this.