[Buildroot] [PATCH] sudo: fix install

[Simon Dawson]

> Do you think you can turn this into a patch that can be submitted
> upstream? I.e, if autoconf has detected that we're cross-compiling,
> skip this install check?

I've submitted a bug report to the sudo Bugzilla:

  http://www.gratisoft.us/bugzilla/show_bug.cgi?id=560

To be honest, my knowledge of autoconf/automake is not sufficient to
be able to fix this properly; specifically, I don't know how or if the
cross-compile can be detected in the Makefiles. If someone can point
me in the right direction I'm quite happy to send a patch upstream...