Merge commit 'c2b0bea4'

* commit 'c2b0bea4':
  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
6dfcbd80
d984b29b
70808859
f434ddf4Merged-by: James Almer <jamrial@gmail.com>