(svn r17333) -Codechange: make the road pathfinder 'interface' like the one for the rail pathfinder
-Fix [FS#3057]: road vehicles forgetting their servicing order when the path takes them away (in bird distance) from their destination first

(svn r12252) -Fix [FS#1801]: Broken FollowTrack_t related functions (thanks michi_cc).
-Fixed by removing FollowTrack_t structure and all related functions. Their purpose was to allow to call track followers from C code. They were:
1. never used
2. obsoleted by switching to C++

(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.