Made several tests pass on NT4 (no SP), Vista and Win2k8.

This allows us to avoid comparing against WINED3DSIO_*, which is specific to
the bytecode.

num_params includes the destination parameter, while we're only interested in
source parameters. This doesn't cause problems for any of the instrctions
currently handled by shader_glsl_map2gl() though, since they all happen to
have at least 1 source parameter.

The "instr" parameter to shader_glsl_gen_modifier() is actually a source
parameter, so comparing against WINED3DSIO_TEXKILL is just silly.

Based on Aric's recent patch.

The callback is probably not fully compatible, but apps are not
supposed to use that function anyway.

ole32/tests: Set tymed in GetData and AddRef the interfaces (ReleaseStgMedium releases them even if pUnkForRelease is non-NULL).

The idea is that we want to prevent backends from parsing the tokens
themselves, which is pretty much a requirement for adding SM4 support.

Thanks to Paul Vriens for pointing out the need for this.