dmusic: Move IDirectMusicThru and IDirectMusicPortDownload to DirectMusicPort object where they belong.

This improves performance a bit for applications that use a lot of
shaders with a lot of constants.

>From 8aa3fb7ceb6fb93abf71520c852403284a9f8c76 Mon Sep 17 00:00:00 2001
From: Henri Verbeet <hverbeet@codeweavers.com>
Date: Fri, 19 Dec 2008 19:21:55 +0100
Subject: wined3d: Set the initial viewport in InitStartupStateBlock().

It's no longer used.

crypt32: Don't check for the TLV after indefinite-length sequence items, the item's decoder has already done so.

cryptui: Fix problem with usage checkbox bitmap not being visible after the first time the edit cert properties dialog is shown.

CreateStateBlock() should take care of that.

wined3d: Add GL_ARB_texture_rg / GL_EXT_texture_swizzle support. These extensions are needed for more efficient R32F/RG32F support.

In my testing on Windows, I wasn't able to make ShellExecute display
any error dialogs.

cryptui: Set cert friendly name and description in response to applying the edit cert properties dialog.