(svn r10762) -Codechange: Change enum StringIDEnum { to static const StringID = for
each STR_ entry. This avoids the need for a cast to StringID in some
places and thus better type-safety.

(svn r10331) -Feature: Add the possibility of automatically filling in timetables based on
the times from the first (or subsequent) run-throughs.

(svn r9898) -Fix (r9874): Many...
- Group protection status wasn't changed via a command.
- Group renaming didn't check group owner (and in fact changed the owner,
just like renaming a sign...).
- Added owner checks to other group commands.
- Invalidate window data after the command has been completed instead of after
the command has been sent. This fixes gui issues in network play.

(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.