This allows fate to run without errors with or without SAMPLES
being set.
Signed-off-by: Mans Rullgard <mans@mansr.com>

These files contain mace6 audio which is tested elsewhere.
Signed-off-by: Mans Rullgard <mans@mansr.com>

This makes only tests actually using avconv depend on it.
The remaining tests already depend on what they need.
Signed-off-by: Mans Rullgard <mans@mansr.com>

No changes in the test results.

The tests work fine without it, and it will cause issues when the
rawvideo decoder is changed to properly handle pts values.
The H.264 conformance tests however are still broken, usually losing
the first frames without it.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>