Fix: Vehicle list windows did not update when this year's profit changed

Remove caching from vehicle group object. and recalculate it whenever
required instead.

Update: Translations from eints
swedish: 60 changes by kustridaren
norwegian (bokmal): 12 changes by buzzCraft
czech: 82 changes by PatrikSamuelTauchim, 1 change by tomas-vl
italian: 86 changes by AlphaJack, 9 changes by federico1564S
german: 16 changes by ebla71
romanian: 10 changes by ALEX11BR
ukrainian: 3 changes by StepanIvasyn
spanish: 1 change by MontyMontana

Fix: [OpenGL] Don't use OpenGL on MESA software renderers.

Performance in this case is worse than not using OpenGL, so just let
OTTD fall back to a different video driver.

Fix: don't link to OpenGL with SDL2 as backend; SDL2 dynamically loads it (#8745)

Although for developers this doesn't change anything, for our
linux-generic binary it changes everything. Without this, the
OpenGL dynamic library is dragged in as dependency, and as it
depends on X11, that will be dragged in too. This is not
something we prefer to have, as that won't run on as many
machines as it could.

SDL2 doesn't depend on OpenGL directly, as it tries to load it
in on runtime. If found, it would work in exactly the same way
as if we would link to OpenGL ourselves. As such, this is
the best of both worlds: our linux-generics have less linked
dependencies, and developers won't notice any difference.

As a side-effect, if someone uses linux-generic on a machine
that does not have any OpenGL package installed, it will
gracefully fall back to the default backend of SDL instead.

Fix bddfcaef: don't tell twice that a client left because of a timeout etc (#8746)

SendError() notifies all clients of the disconnect. This calls
CloseConnection() at the end, which also notified the clients
of the disconnect. Really no need to do it twice.

The status NETWORK_RECV_STATUS_SERVER_ERROR is only set by
SendError(), so in case that is the status, don't let
ClientConnection() send another notification.

Update: Translations from eints
swedish: 1 change by kustridaren
english (us): 15 changes by 2TallTyler
catalan: 1 change by J0anJosep
dutch: 1 change by Afoklala

Fix 02e770ff: allow estimating CloneVehicle if short on money (#8748)

CheckCompanyHasMoney() was also executed when not using DC_EXEC,
resulting in an error about shortage of money instead of the
estimation.
This mostly is a problem for AI players, as they will have no
way to know how much it would have cost.

Fix #8123: trams on half-tiles couldn't find depots (#8738)

Basically, follow_track.hpp contains a fix for half-tiles, but
this wasn't duplicated for when trying to find a depot and in
a few other places. This makes sure all places act the same.

Update: Translations from eints
swedish: 19 changes by kustridaren
german: 1 change by Wuzzy2
slovak: 3 changes by FuryPapaya

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.

Update: Translations from eints
estonian: 7 changes by siimsoni
polish: 2 changes by yazalo

Codechange: [SDL2] Allow several places to hook into the SDL driver

This allows future subdrivers to use these to manage their
own flow.

Codechange: [SDL2] Move functions and variables to class-scope

This allows future subdrivers to override them.

Codechange: [SDL2] Move SDLSurface code to its own function

This increases readability, and allow future subdrivers to not
use SDLSurface to draw.

Codechange: [SDL2] Split Start() in a few more functions

This makes it a bit easier to follow what is going on, and
allow future subdrivers to hook into a few of these functions.

Reworked the code slighly while at it, to return early where
possible.

Fix #6319: [Win32] don't use clipping; draw whole screen every frame (#8726)

When we clip the region that is only been redrawn, something
weird happens on Windows. When pushing 60 frames per second on a
60Hz monitor, it appears that the clipped region is often shown
of another frame, instead of the current.

Examples of this are:
- pause the game, move your mouse to the left, and at the right
speed it totally disappears.
- fast aircrafts seem to be in several places at once, weirdly
lagging behind.
- in title screen, moving your mouse gives you the idea it is
jumping places, instead of smooth movements.

In the end, if you do nothing, everything is correct, so it is
eventually consistent. Just when we are firing many BitBlt in
a clipped region, the in-between is not.

What goes wrong exactly, I honestly do not know. On every frame
that we push to the DC is a mouse painted, but visually it
sometimes appears like it is not. Recording with external software
shows it really is there.
It is also not our eyes playing tricks on us, as the first example
makes it really clear the mouse pointer really is not painted.

And to be clear, with the mouse this is easiest reproduceable,
as high-speed objects are influences by this most. But this happens
for all movement that redraws small regions.

Either way, not using clipped regions resolves the issue completely,
and there appears to be little to no penalty (I failed to measure
any impact of drawing the full screen). So better have a good game
than fast code, I guess?

Update: Translations from eints
english (us): 78 changes by 2TallTyler
polish: 1 change by yazalo

Update: Translations from eints
estonian: 19 changes by siimsoni
french: 3 changes by glx22

Fix: [YAPF] Road pathfinder did not account for length of tunnel/bridge in path cost

Copy calculations from the rail pathfinder