Codechange: allow certain enumeration to be added

Otherwise C++20 doesn't like it.

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

Codechange: Base CargoArray off std::array.

This avoids needing to define array accessors and allows use of
default value initialization.

Fix #10032: Capacities of articulated vehicles in build window

See also: #9954

Fix #10114: Wonky depot layout. (#10191)

Depot lists internal layout was not handled well. This is improved by
throwing more Rects at it:
- Vehicle images are now be vertically centred in the rect.
- Image clipping is relaxed to cover the rect, improving larger sprites.
- Outline highlight is now aware of bevel thickness.

Codechange: Spell 'Viewport' consistently

Some places in the codebase misspell 'Viewport' as 'ViewPort' or 'view_port'.
This patch makes everything consistent.

(svn r14395) -Fix [FS#2285]: crashes and GUI desyncs when order is deleted/modified while the timetable window is open
-Fix: close any dropdown and child windows in the Order and Timetable windows when selected order is deselected, deleted, ...

(svn r14306) -Codechange: unify the code to draw the vehicle list.
-Fix [FS#2292]: inconsistency between drawn vehicle lists in the vehicle list and group windows.

(svn r14104) -Feature: Add a window for waypoints, allowing to view all the trains having the selected waypoint in their orders.
Changing its name is also supported from the same new window.
Gui based on work done by Satyap, on FS#2025.

(svn r13587) -Codechange: make some globals members of VehicleListBase since they are used as such
-Cleanup: some small things referring the change

(svn r13037) -Codechange: make a class of the ReplaceVehicle window.
-Fix [FS#1997]: MSVC 64 bit build failing to compile due to std::vectors being very large..

(svn r11916) -Codechange: use enums from VehicleViewWindowWidgets instead of constants
-Fix: refit button widget was not correctly updated

(svn r10097) -Feature: Add support for articulated road vehicles, or callbacks 11 and 17 for
road vehicles for those who prefer the technical explanation.

(svn r8661) -Fix: [depot windows] Enlarge the blocks in the depot window if a sprite is too big to fit (ships and aircraft only)
-Codechange: depot windows default now makes a 1x1 matrix and resize the window by block size*number of blocks
This will make less vehicle type specific code and easier to read resizing based on sprite sizes

(svn r8371) -Codechange: [autoreplace GUI] moved the autoreplace GUI to a file of it's own
Note: it's the same as r8363, only this time the svn history of autoreplace should be preserved

(svn r8338) -Codechange: merged road vehicle build window into the other ones
Note: now all build vehicle windows are merged into build_vehicle_gui.cpp

(svn r8335) -Feature: the build ship window is now also resizable horizontally and contains sorting options
-Codechange: the build ship window is merged into build_vehicle_gui.cpp

(svn r8331) -Feature: the train and aircraft build windows are now resizable in horizontal direction as well
-Codechange: merged train and aircraft build window code

(svn r8293) -Codechange: overloaded ShowVehicleListWindow() so it can open all types of vehicle lists (depending on arguments)
- Also removed some unneeded arguments
- this also allows removing an if-else cascade in ShowVehicleListWindowLocal()

(svn r7759) -Merge: makefile rewrite. This merge features:
- A proper ./configure, so everything needs to be configured only once, not for every make.
- Usage of makedepend when available. This greatly reduces the time needed for generating the dependencies.
- A generator for all project files. There is a single file with sources, which is used to generate Makefiles and the project files for MSVC.
- Proper support for OSX universal binaries.
- Object files for non-MSVC compiles are also placed in separate directories, making is faster to switch between debug and release compiles and it does not touch the directory with the source files.
- Functionality to make a bundle of all needed files for for example a nightly or distribution of a binary with all needed GRFs and language files.

Note: as this merge moves almost all files, it is recommended to make a backup of your working copy before updating your working copy.