WineD3D sets up the viewport according to the front buffer, so this
needs to be changed to the values of the render target passed when the
d3d7 device is created and this device turns out not to be the known
front or back buffer.

Height * Pitch is not a valid way to calculate the surface size for
DXTn surfaces. Instead of messing with format specific formulas just
use the size stored in the destination surface.

Compressed surfaces in ddraw do not have a pitch, instead the full
surface size is reported. Also adds tests for the extact behavior and
surface flags set.

rsaenh: Fix read_key_container bug that prevents CryptAcquireContext from correctly loading the keys.

Get rid of hardcoded path names to avoid trouble on 64-bit platforms.
Based on a patch by Robert Millan.