Tarball with libhdhomerun_20171221 [1] was removed from upstream repository
and as it can not be found.

[1] http://download.silicondust.com/hdhomerun/libhdhomerun_20171221.tgz

Signed-off-by: Josef Schlehofer <pepe.schlehofer@gmail.com>

- refresh patches
 - add missing dependency: libffi

Signed-off-by: Marius Dinu <m95d+git@psihoexpert.ro>

[edited commit message and the maintainer line]

Without this, compilation fails because of a fortify-source header.
There's something defining and undefining _GNU_SOURCE somewhere.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

The crude loop I wrote to come up with this changeset:

  find -L package/feeds/packages/ -name patches | \
  sed 's/patches$/refresh/' | sort | xargs make

Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>

Signed-off-by: Rosen Penev <rosenp@gmail.com>

New string warnings were introduced. Adding -Wno-error to TARGET_CFLAGS
does not work so patch it out.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

Signed-off-by: Rosen Penev <rosenp@gmail.com>

Also switched to codeload for Makefile simplicity.

Signed-off-by: Rosen Penev <rosenp@gmail.com>