Fix D3D8, D3D9, and GL builds.

Bug swiftshader:63
Bug swiftshader:31

Change-Id: I59d08cbc8379e2c30984b9ec0ed4d49317633ce8
Reviewed-on: https://swiftshader-review.googlesource.com/10048
Tested-by: Nicolas Capens <capn@google.com>
Reviewed-by: Nicolas Capens <capn@google.com>

src/D3D8/Direct3DBaseTexture8.cpp

diff --git a/src/D3D8/Direct3DBaseTexture8.cpp b/src/D3D8/Direct3DBaseTexture8.cpp
index 3a3f208..fe1aa76 100644
--- a/src/D3D8/Direct3DBaseTexture8.cpp
+++ b/src/D3D8/Direct3DBaseTexture8.cpp
@@ -135,7 +135,7 @@
 		return LOD;
 	}
 
-	long Direct3DBaseTexture8::SetLOD(long newLOD)
+	unsigned long Direct3DBaseTexture8::SetLOD(unsigned long newLOD)
 	{
 		TRACE("");