(svn r13251) -Codechange: rename _patches to _settings as that is more logic.
-Codechange: move all Settings into substructs of _settings in a way that they are logically grouped.

(svn r10366) -Codechange [YAPF]: added DEBUG_YAPF_CACHE macro that (when set to 1) allows to track YAPF "cache errors". They are probably responsible for current MP desyncs. (thanks Rubidium for this great idea!).
I will deal with those errors/desyncs tomorrow.

(svn r10349) -Fix [FS#941, YAPF, r10301]: tile/trackdir must be used as node key and also as segment key in the cache (SmatZ).
In the past it was possible to use tile/exitdir as the key because segments beginning on the same tile/exitdir were incorrectly considered the same. What I still don't understand is why this bug happened only on 64 bit systems (linux, Win64).

(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.