[Buildroot] [PATCH v2 1/1] c-capnproto: add package

[Arnout Vandecappelle]

On 24/10/2018 00:00, Joel Carlson wrote:
> Adds the c-capnproto package. This creates a C plugin for the regular
> capnproto capnpc compiler. It supports only serialization (no RPC).
> 
> Since it depends on capnproto, the package selects capnproto and has the
> same requirements as capnproto.
> 
> Includes a patch submitted upstream to fix a compilation error hit by
> some toolchains.
> 
> Signed-off-by: Joel Carlson <JoelsonCarl at gmail.com>

 Finally applied to master, with some changes:

     - use latest upstream version which has patch already applied;
     - mark in Config.in that dependencies come from capnproto;
     - add some newlines to .mk file;
     - updated commit message.

 Regards,
 Arnout