Tentative fix for 'couldn't open directory ' issue
Don't use SSE2 optimisations by default; see note in configure.ac.
Never refuse to run due to a missing LoadingWindow; just log an error and fall back to null
Don't consider explicitly read-only paths for file writing
Remove all 'dynamic' driver work to date. This may be replaced with a LuaDriver backport in the foreseeable future.
Tell SMO we're SM 3.95; we haven't changed any code, so this seems less dangerous than tying it to a version number until/unless we actually modify things.
Make configure versioning more name-agnostic, grab our version from the src tag and have a separate value for the revision, append 'DEV' to the version name if we're not on the tagged release
removed what I'm guessing is a debug printf (please use LOG->Debug and please try not to commit those calls...)
Overhaul of ProductInfo: change to const refs, removed unused bug tracker, fixed casing to match rest of the engine.
Unbreak the OPENITG_VERSION token, which someone broke by setting it to a string instead of an integer. Added comments to clarify purpose. Added code to generate an integer token that defines a build, using its versioning data, and several constants extended to Lua space.
Moved Lua versioning globals logic (DiagnosticUtils.cpp -> ProductInfo.cpp), string::npos -> CString::npos, SetProgramGlobals -> SetVersionGlobals
Added Lua sandboxing for profile-loaded Lua data. If the profile data can't be loaded within the sandbox (no external symbol or function calls), then it's blanked on next save.
Remove prefs for 'AllowExtraPlayerOptions', 'CustomMaxSizeMB', and 'CustomMaxStepSizeKB'; the former has no useful purpose, the latter two provide unnecessary config for edge cases. We can determine more reasonable 'hard' limits and cut some cruft in the meantime
Also remove 'CustomsLoadMax' pref; it's unhelpful and the load timeout is what matters, not how many songs load before the timeout is hit.
Add LoadingWindow::SetProgress(current, target)
Clean up for Gtk widget: remove window decorations, add a progress bar (currently only does percentages -- may add pulsing in the future if it seems necessary)
Update loading.xpm to lightning's splash image
Implement progress bar in SongManager
Merge branch 'master' of https://github.com/vyhd/openitg

Conflicts:
	autogen.sh
	configure.ac
	src/DiagnosticsUtil.cpp
	src/NetworkSyncManager.cpp
	src/ProductInfo.cpp
	src/ProductInfo.h
	src/RageFileManager.cpp
	src/ScreenTitleMenu.cpp
	src/SongManager.cpp
	src/StepMania.cpp
	src/arch/Lights/LightsDriver.cpp
	src/archutils/Unix/CrashHandlerChild.cpp
	src/archutils/Win32/Crash.cpp
autogen aclocal fixups + build chroot dependency fixes