ecdsautils/libecdsautil: add 0.3.2.20160630

ecdsautils/libecdsautil: add 0.3.2.20160630

These changes are a direct copy of [1]. The original commit
messages were:

> commit 0a6411b56b9edeba1809ffe45c03dbb7261bf45c
> Author: Matthias Schiffer <redacted>
> Date:   Sun May 8 11:39:22 2016 +0200
>
> ecdsautils: update to current git, add libecdsautil
>
> The addition of libecdsautil required us to switch from statically
> linked libuecc to a shared library (as we also want shared
> libecdsautil).

> commit 05bc59f3196b1dc05afe845e1df0073e40f0757d
> Author: Nils Schneider <redacted>
> Date:   Mon Jul 21 14:51:42 2014 +0200
>
> ecdsautils: update to v0.3.2

> commit db7d9410b3e21f5770f28a3c537ba6a681c24e62
> Author: Nils Schneider <redacted>
> Date:   Thu Jul 10 16:28:10 2014 +0200
>
> ecdsautils: download using git instead of http

> commit 3a1b6541b43d4801608c391d64582af41e7a155a
> Author: Nils Schneider <redacted>
> Date:   Wed Feb 6 13:30:26 2013 +0100
>
> Add ecdsautils v0.2

[1]: https://github.com/freifunk-gluon/packages/blob/0a6411b56b9edeba1809ffe45c03dbb7261bf45c/utils/ecdsautils/Makefile

Signed-off-by: Dominik Menke <redacted>