wined3d: Use higher precision to convert floats into text.

[Vitaliy Margolen]

Stefan Dösinger wrote:
> As Henri said in the bug report, we can just declare the LC* uniform instead 
> of constant and load them once at program link time. This way we loose the 
> ability to tell the compiler about the constants, but I doubt this changes 
> anything, but we can simply pass a float * to opengl witohut having to 
> convert to a text. For ARB shaders we can use the program-local environment 
> and load it at compilation time.

Whatever you want to do - I'd like to see this bug fixed before the next 
version is out. All the discussions about "possible options" doesn't get it 
anywhere.

Vitaliy.