(svn r1958) GenerateStationName() tidyup.

(svn r1957) Compilation fix.

(svn r1956) -Fix: [NPF] New target tile for heuristic should perform better with larger stations (HackyKid)

(svn r1955) Fix: Make the town growth frequency scale properly both up and down. The scaling is now also based on the number of towns instead of the map size. (In cooperation with HackyKid.)

(svn r1954) Fix: The new AI now does not think it can connect to the road by building its piece of road above the end of a tunnel anymore.

(svn r1953) Codechange: Tidyup, reduced ridiculous indentation levels, some sprintf()s replced by snprintf()s.

(svn r1952) Fix: Hopefully fixed the enormous towns growth slowdown in large maps. (Inspired by toholio.)

(svn r1951) Introduced SeedModChance() (which is like SeedChance() but uses simple modulo instead of bitshifting and multiplication), explained why does it work better, used it in MakeCzechTownName() and added a TODO note about possibly using it in the other town name generators too.

(svn r1950) Fix: A slight adjustment in the DoRandom() function which however causes dramatic improvement in the distribution of random numbers.

With the original generator, e.g. Random()%44 on 100 attempts regularily
generated only 22 different values! With this adjustment, the distribution is
much more uniform, almost approaching the glibc's random() call.

This means the random numbers are actually usable i.e. for the town names
generators which almost never tried a large part of the names while others were
very frequent.

Note that we attempted to test whether the randomness did not degrade in some
other way, and it came clean from the tests we performed. If you spot anything
fishy, try without this patch, though.

(svn r1949) Fixed the CzechChoose usage in the Czech word tables. Now selecting colours actually works.