Codechange: automatic adding of _t to (u)int types, and WChar to char32_t

for i in `find src -type f|grep -v 3rdparty/fmt|grep -v 3rdparty/catch2|grep -v 3rdparty/opengl|grep -v stdafx.h`; do sed 's/uint16& /uint16 \&/g;s/int8\([ >*),;[]\)/int8_t\1/g;s/int16\([ >*),;[]\)/int16_t\1/g;s/int32\([ >*),;[]\)/int32_t\1/g;s/int64\([ >*),;[]\)/int64_t\1/g;s/ uint32(/ uint32_t(/g;s/_uint8_t/_uint8/;s/Uint8_t/Uint8/;s/ft_int64_t/ft_int64/g;s/uint64$/uint64_t/;s/WChar/char32_t/g;s/char32_t char32_t/char32_t WChar/' -i $i; done

Add: Option to (dis-)allow accelerated video drivers. (#8819)

The video drivers using the OpenGL backend are currently our only
accelerated drivers. The options defaults to off for macOS builds and
to on everywhere else.

Co-authored-by: Michael Lutz <michi@icosahedron.de>

Codechange: [OSX] GameLoop is really more like MainLoop

MainLoop() is used to bootstrap OSX, where later a callback is
done to GameLoop() to execute OpenTTD. All other video drivers
don't need that, so what is in GameLoop is in MainLoop for all
other drivers. This is rather confusing. So, instead, name
GameLoop MainLoopReal to be more in sync with the other drivers.

Codechange: [Video] make the prototype of PollEvent() the same for all drivers

Additionally, call it from the draw-tick.

Codechange: [OSX] Only keep a total dirty rect for drawing.

When drawing an 8bpp screen buffer, palette resolving was done for each
dirty rectangle. In areas with high activity, this would mean a pixel might
have been resolved multiple times. Also, if too many individual updates
were queued, the whole screen would be refreshed, even if unnecessary.

All other drivers only keep one overall dirty rect, so do it here as well.

Codechange: be consistent in what CheckPaletteAnim() does and when it is called

Additionally, make sure this is a class method. Later commits
will make use of this.

Codechange: be consistent in naming the paint function Paint()

Also move this function to be a class member. This to allow
further deduplicating of code in a later commit.

Change: [OSX] Replace screen resolution list with suggested window sizes.

We never change the real screen resolution on OSX. As such, offering a list
of resolutions is pointless. Instead of that, offer the user a list of
commonly used window sizes up to the current screen size.

Revert 4ce53cb8: [OSX] Delayed fullscreen switch is not needed anymore.

The fix for #8067 solves the real issue, making this workaround unneeded.

Fix: [OSX] Quitting in fullscreen mode would loose the original window size.

This replicates the behaviour on e.g. Windows, which saves the original window size.

Codechange: [OSX] Re-arrange the OSX video driver code by combining all drawing code and moving the window/event handling to a different file.

This is just a code move/rename, not a functionality change.

Remove: [OSX] Old fullscreen subdriver for pre 10.7 systems.

Since the move to C++11, building for pre 10.7 is not possible with the native
Apple tools. Also, due to bitrot, the file doesn't even compile anymore. While
this could be fixed, it shows that this subdriver is basically never used anymore.

Remove: [OSX] QuickDraw video subdriver used for OSX versions up to 10.4.

Since the C++11 move, getting OpenTTD to compile and run for anything
below 10.7 basically requires building a custom compiler and libc++.
Also, the QuickDraw subdriver crashes on more modern OSX version. While this
is fixable, keeping the driver around is probably pointless.

Change: [OSX] Recreate backing store if the colour profile of the screen (or the screen) the game window is one changes.

This will result in changing colours if moving OpenTTD from one screen to another, but should avoid performance problems if the window is moved.

Codechange: Use override specifer for overriding member declarations

This is a C++11 feature that allows the compiler to check that a virtual
member declaration overrides a base-class member with the same signature.

Also src/blitter/32bpp_anim_sse4.hpp +38 is no longer erroneously marked
as virtual despite being a template.

(svn r22893) -Fix [FS#4744]: [OSX] Compilation on OSX 10.7 was broken (based on patch by leecbaker)
-Add: [OSX] Support for fullscreen mode when compiled against SDK 10.7. Otherwise fullscreen mode is disabled when OpenTTD is run on OSX Lion

(svn r11734) -Change: Allow ToggleFullScreen to return the result of the operation' attempt. Previously, only visual clues were available.
-Fix[FS#1519]: When you can not use this resolution at full screen, now you'll know that it failed.
As for the reason it did not work, each computer/OS has its reason.