darcs patch: generate a warning for missing license file (#180)

[Duncan Coutts]

On Sat, 2008-01-26 at 22:17 -0500, Brent Yorgey wrote:
> Hi all,
> 
> Here's another patch, this one resolves issue #180.  If a license file
> is declared but missing, a warning will now be generated during the
> configure phase.
> 
> -Brent

Thanks very much for the patches Brent!

Duncan