d3dx9: Implement D3DXFloat16to32Array and D3DXFloat32to16Array.

[Marvin]

Hi,

While running your changed tests on Windows, I think I found new failures.
Being a bot and all I'm not very good at pattern recognition, so I might be
wrong, but could you please double-check?
Full results can be found at
http://testbot.winehq.org/JobDetails.pl?Key=8981

Your paranoid android.


=== WXPPROSP3 (32 bit math) ===
math.c:2238: Test failed: Got 7fff, expected 7c00 for index 7.

=== WVISTAADM (32 bit math) ===
math.c:2238: Test failed: Got 7fff, expected 7c00 for index 7.

=== W7PRO (32 bit math) ===
math.c:2238: Test failed: Got 7fff, expected 7c00 for index 7.