libc/include unistd.h

[drepper@sources.redhat.com]

CVSROOT:	/cvs/glibc
Module name:	libc
Changes by:	drepper@sources.redhat.com	2002-08-04 02:15:16

Modified files:
	include        : unistd.h 

Log message:
	Add libc_hidden_proto for __sysconf.