Clean up some of the fallout from the Solaris patch - mostly configure
script breakage.  In particular, disable the sendfile() check, as Solaris
doesn't have a working sendfile() any more than Linux does.  Actually, the
Solaris sendfile code was never compiled or used, because the #ifdefs in
cache_pool.c were all wrong.



git-svn-id: http://www.varnish-cache.org/svn/branches/2.0@3587 d4fa192b-c00b-0410-8231-f00ffab90ce4