Print format for failed SetFormat calls.

unicode counterparts.

- Make sure to release the dplayx semaphore in for error cases as well.
- Prevent race condition between creation of the semaphore and
  grabbing of the lock by creating the semaphore in the locked state
  instead of unlocked.

Using alpha bits > 8 makes this function fail, while it should not.

buffer in the convert_888_to_0888_* functions.

to NULL when net_loc isn't present in the input URL.

thread creation function to the NTDLL one.

Ues pipe sync code from OSS/ALSA rather than windows events.

- create a base cert context, and make functions unaware whether
  they're dealing with the base or derived type
- simplify stores as a result

In the old d3d8 code SetVertexShader stored the so called vertex
declaration in the stateblock. In case of WineD3D this isn't done
which breaks the drawPrimitive code. This patch stores the vertex
declaration again in the stateblock which fixes Age Of Mythology.