package/nginx: new package

nginx module selection is, by default, the same as the one sets by
the upstream configure script.

Patches improving the cross-compilation support have already been sent
upstream for integration [1-5].

All these patches are needed because nginx uses its own handwritten
build-system, which is cross-platform, but does not properly support
cross-compilation.

Fixes bug: #3427 [6]

[1] http://mailman.nginx.org/pipermail/nginx-devel/2014-August/005722.html
[2] http://mailman.nginx.org/pipermail/nginx-devel/2014-August/005724.html
[3] http://mailman.nginx.org/pipermail/nginx-devel/2014-August/005725.html
[4] http://mailman.nginx.org/pipermail/nginx-devel/2014-August/005723.html
[5] http://mailman.nginx.org/pipermail/nginx-devel/2014-August/005726.html
[6] https://bugs.uclibc.org/show_bug.cgi?id=3427



Signed-off-by: Samuel Martin <s.martin49@gmail.com>
Cc: Daniele Salvatore Albano <info@daccii.it>
Cc: Maxime Hadjinlian <maxime.hadjinlian@gmail.com>
Cc: Johan Oudinet <johan.oudinet@gmail.com>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Tested-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>