Various: Don't use boolean bitfields

Using bitfields causes less optimized code generation and the memory
savings are minimal as none of the objects are instantiated enough
times to be worth it.

See https://blogs.msdn.microsoft.com/oldnewthing/20081126-00/?p=20073

plugins/win-capture/graphics-hook/d3d9-capture.cpp

@@ -32,8 +32,8 @@ struct d3d9_data {
 	uint32_t               cy;
 	D3DFORMAT              d3d9_format;
 	DXGI_FORMAT            dxgi_format;
-	bool                   using_shtex : 1;
-	bool                   using_scale : 1;
+	bool                   using_shtex;
+	bool                   using_scale;
 
 	/* shared texture */
 	IDirect3DSurface9      *d3d9_copytex;