[Ohrrpgce] SVN: teeemcee/8727 gfx_directx: correctly handle window size change requests while fullscre

[subversion at HamsterRepublic.com]

teeemcee
2017-05-06 07:21:41 -0700 (Sat, 06 May 2017)
461
gfx_directx: correctly handle window size change requests while fullscreen and before initialisation

In particular, changing window size while fullscreen would cause the window
to no longer cover the screen

The --width, --height and --fullscreen commandline options now work: they didn't
before because they were sent before init, which reset all those settings

This commit makes some significant changes to the backend, so it shouldn't
be considered stable.
---
U   wip/gfx_directx/d3d.cpp
U   wip/gfx_directx/d3d.hpp
U   wip/gfx_directx/gfx_directx.cpp
U   wip/gfx_directx/release.txt
U   wip/gfx_directx/version.h
U   wip/gfx_directx/window.cpp
U   wip/gfx_directx/window.hpp
U   wip/gfx_directx.dll