This value does not exist directly under the product key on Windows.

Initialization of the bitfield done in find_ps_compile_args
based on the previously introduced pow2Matrix_identity flag.

New flag helps to quickly find out whether the pow2Matrix is a
identity matrix (no texcoord fixup needed) or not.

This avoids deadlocks with the loader lock.

ole32: AddRef does not return an HRESULT. Have the constructor create the object with one reference.

This is the "Cryptography API: Next Generation" introduced by Vista.

We may want to push this into either wined3d or our future shader compiler
dll. It's not a whole lot of code though.