Codechange: Store text run positions in vector of points.

This simplifies the interlaced vector of x/y positions.

Codechange: Dimension must have both width and height.

Default parameters allowed Dimension to be constructed with only a width.

Instead use separate empty and width/height constructors to ensure that either none or both are provided.

Codechange: Move RectPadding::zero definition to header. (#11461)

This potentially allows better inlining/optimization.

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

Fix: Indent production in industry window and resolve button issues. (#10184)

Industry production used to be indented, although a different amount than
the industry accepts list. This is now added back, with the standard indent
width.

Additionally the cheat-mode production modifier buttons now support RTL and
the list height now takes account of the button height.

Add: RectPadding type.

This is similar to Rect but specifies padding to apply to a Rect.

Codechange: Add some Rect helpers.

Shrink/Expand/Translate are marked nodiscard as they provide a new Rect
rather than modifying the original Rect.

Cleanup: Replace single-use Pair struct with std::pair.

This struct is defined in geometry_type but not used by any geometry-related
code, only for subsidy code where both parameters are cast from int to
NewsReferenceType.

Fix: Globally apply preprocessor directive coding style

Global; except for the 32-bit SSE blitter, which has some #DEFINEs
in not-very-nice places.

Remove: MorphOS / AmigaOS support

In 10 years there is no commit to change how MorphOS works, and we
have no active maintainer for it. It is unlikely it works in its
current state (but not impossible).

With the arrival of SDL2 (and removal of SDL), MorphOS is no longer
support. There is an SDL2 port for MorphOS, but it is not maintained
by upstream SDL2, and nobody can currently test it out.

If anyone wants to re-add MorphOS, please do (revert this patch,
fix the problems, and create a Pull Request). If you need any help
doing so, let us know! It is not that we don't like MorphOS, it is
that we don't have anyone fixing the problems :(