Update kopensolaris bits/confname.h

Copy bits/confname.h and add kopensolaris extensions
starting from 10001. These extensions and some standard
options are obtained from the sysconfig() system call
and are mapped to _CONFIG_* variables defined in sys/sysconfig.h
(kopensolaris specific). All this is done in
sysdeps/unix/sysv/solaris2/kopensolaris-gnu/sysconf.c