patch to make current strace CVS compile on Solaris 2.6

[John Hughes]

I don't get it.  The stropts.h and sys/tihdr.h files are already in the
list.

> ! AC_CHECK_HEADERS(sys/reg.h sys/filio.h sys/acl.h sys/asynch.h sys/door.h
stropts.h \

^^^^^^^^^
> sys/conf.h sys/stream.h sys/tihdr.h sys/tiuser.h sys/sysconfig.h
asm/sigcontext.h ioctls.h \
                          ^^^^^^^^^^^
> sys/ioctl.h sys/ptrace.h termio.h linux/ptrace.h asm/reg.h linux/icmp.h
linux/in6.h sys/uio.h \
> sys/aio.h linux/netlink.h linux/if_packet.h poll.h sys/poll.h sys/vfs.h
netinet/tcp.h \
> netinet/udp.h asm/sysmips.h linux/utsname.h sys/nscsys.h)

What good does checking for them again do?