Fix: The "Display Stats" menu entry was disabled while still available.

This feature doesn't require 3D texture surfaces.

This commit fixes ticket #2819.
Cosmetics: Make the checks for the "Renderer Settings" menu more consistent.
Revert "actually disable C4995 and C4996 for udf.cpp"

This reverts commit 03ca3eff5fccbfe6bfc1583789d4fe91af8b1900.
update TreePropSheet from TortoiseSVN
fix warning
update ffmpeg (n0.8-17851-ga6e4796)
Work around a libavresample crash
initialize variables (WIP)
do while (0) (WIP)
fix line endings
WebUI: rename a few css classes, sort the properties by name
WebClientSocket.cpp: add line breaks to the produced html code
WebClientSocket.cpp: remove non existent css classes