(svn r14289) -Fix [FS#2286](r3720)(r1): sound effects an music volume should be in range 0-127, default value shouldn't be higher
(based on a patch by kakaopor)

(svn r14197) -Codechange: rework (original) base graphics determination methods. This yields in the following:
-Feature: make configuring the to-be-used base graphics via openttd.cfg and the command line possible.
-Feature: allow both the German as well as non-German toyland graphics as "correct" and official graphics.
-Feature: allow people to create their own base graphics easily and without requiring code changes.

(svn r14164) -Codechange: simplify and unify the addition of ini items with value when not loading an ini file.
-Fix: wrong insertion management causing leaks.

(svn r13369) -Codechange: remove duplication of network configuration settings between NetworkSettings and NetworkGameInfo.
-Fix: failure of changing the server password during games because the password wasn't duplicated properly.

(svn r13317) -Codechange: make news messages use a linked list instead of a moving circular buffer. This makes it possible to store more news messages in the history. Based on a patch by Cirdan.
-Codechange: the number of news messages is reduced by removing every news message that is a configurable amount older than when it would not be shown in the newspaper popup/ticker, which is e.g. a month for industry production changes and half a year for subsidy offers. As a result the more important messages will stay longer in the message history (if longer than 30 messages).

(svn r13256) -Codechange: merge the OPTS and PATS chuncks.
-Codechange: split the diff_custom variable.
-Feature: allow changing some of the diff_custom variables via the console in network games.

(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 r13226) -Feature: Allow to have more than only two airports per town. The number of airports is now controlled by the noise each of them generates, the distance from town's center and how tolerant the town is.
Initial concept : TTDPatch (moreairpots), Initial code : Pasky
Thanks to BigBB (help coding), Smatz Skidd13 and frosch for bugcatches and advices

(svn r12648) -Feature: allow four different non-stop types in a single game instead of two. The "TTDP compatible order" setting now only sets the default behaviour of new trains.
-Feature: allow three different load type in a single game instead of two. One can choose full load all and full load any instead of full load being governed by the "full load any" patch setting.

(svn r12293) -Feature: Ability to change aircraft speed factor, from so
called 'realistic' (matching other vehicles) (1/1) to original TTD
speed (1/4). Note this option defaults to original TTD speed.