Remove: obsolete NewGRF text unprinting. (#10884)

Co-authored-by: Rubidium <rubidium@openttd.org>

Add: {PUSH_COLOUR} and {POP_COLOUR} control codes to handle switching colours. (#6737)

This replaces the internal SCC_PREVIOUS_COLOUR swap.

(svn r13715) -Fix [FS#2129]: C-like strings had to be rebound each time they were printed, otherwise the text could change due to the few number of slots that could be used to bind.
-Codechange: remove all BindCString and related functions and replace it by RAW_STRING which prints the C-string raw pointer that is on the 'print stack'.

(svn r11981) -Fix [FS#1698]: Use unicode glyph mapping to fix up missing/shuffled sprites in original data files instead of shuffling or skipping
sprites directly. Some required glyphs were not loaded.
-Fix: Large capital U with grave (Ù) along with some other glyphs are broken in the original data files, so do no display them.

(svn r10820) -Codechange: make negative currencies red and restore the colour from before the currency was printed; this removes the need to make two strings for printing currencies (one for positive currencies and one for negative currencies).
-Fix [FS#1036]: do not use green for currencies as it is practically unreadable on CRT monitors.

(svn r10323) -Codechange: reference company name, number and player (president) name
by index

(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.