GitLab

	m/sps7.h, s/hpux.h, s/usg5-4.h (HAVE_DUP2): Removed; derived by
	configure script.
	* s/hpux.h, s/irix3-3.h, s/aix3-1.h (HAVE_GETHOSTNAME): Removed;
	derived by configure script.