Merge commit 'c2b0bea40f1fd4399ff6184a2df4f397c0f4b3ab'

* commit 'c2b0bea40f1fd4399ff6184a2df4f397c0f4b3ab':
  avconv_hw: Free device on initialisation failure
  vf_hwmap: Properly free a locally derived device
  vf_hwmap: Add missing error code
  configure: Fix handling of _select dependencies

This commit is a noop, see
6dfcbd80ad
d984b29b21
70808859dd
f434ddf48e

Merged-by: James Almer <jamrial@gmail.com>