Make.rules.in: Pass the --nounistd flag to flex since unistd.h is a header that might not be present on all systems.

[Alexandre Julliard]

Robert Shearman <rob at codeweavers.com> writes:

> The point is that all of the files need it. Only tools/widl/parser.l
> needs to include unistd.h and it already does so manually.

Then you should put the option in all the files. That sort of thing
doesn't belong in the global make rules.

-- 
Alexandre Julliard
julliard at winehq.org