(svn r7449) -Codechange: Rename _path to _paths as it is technically more correct, but mainly because
it interferes with OS/2 symbol in libc (psmedley)

(svn r7274) -Codechange [utf8]: Add input/output unicode support. This actually only changes win32
since it uses UTF16 for file access. To keep os-specific code to a minimum, OpenTTD
uses UTF8 internally everywhere, converting to OS-type when needed (save/load/screenshot/etc.)

(svn r5946) -Add: merged the TGP branch to mainline. TGP adds:
- New optional landscape generator (TerraGenesis Perlin)
- Load heightmaps (either BMP or PNG)
- Progress dialog while generating worlds (no longer a 'hanging' screen)
- New dialogs for NewGame, Create Scenario and Play Heightmap
- Easier to configure your landscape
- More things to configure (tree-placer, ..)
- Speedup of world generation
- New console command 'restart': restart the map EXACTLY as it was when you
first started it (needs a game made after or with this commit)
- New console command 'getseed': get the seed of your map and share it with
others (of course only works with generated maps)
- Many new, world generation related, things
- Many internal cleanups and rewrites
Many tnx to those people who helped making this:
Belugas, DaleStan, glx, KUDr, RichK67, Rubidium, and TrueLight (alfabetic)
Many tnx to those who helped testing:
Arnau, Bjarni, and tokai (alfabetic)
And to all other people who helped testing and sending comments / bugs
Stats: 673 lines changed, 3534 new lines, 79 new strings

(svn r5764) - Cleanup: - Cleanup: Move the now unified FiosAlloc, compare_FiosItems, FiosFreeSavegameList, FiosMakeSavegameName, FiosDelete and FileExists to newly created file fios.c where it belongs.
- Fix: forgot to remove GetLanguageList from functions.h in previous commit