[Freeciv-Dev] Too few starts and MAX_NUM_PLAYERS (PR#364)

[David Pfitzner <dwp@xxxxxxxxxxxxxx>]

With sufficiently old savegames, or with the scenarios in
freeciv/data/scenario, cvs server fails to load with error:

0: Too few starts 14 (need at least 30).

This is from server/maphand.c: map_startpos_load(), due to
recently increased MAX_NUM_PLAYERS.

Several things to fix:

- The provided scenarios should ideally have more starts, corresponding
  to the new nations.  (Would be nice to have named start positions, ie 
  with nation name, rather than numbered positions...)

- Should load old savegames and scenarios anyway, and limit the
  number of initial players if necessary, or whatever.  Current 
  behaviour is particularly silly for non-scenario savegames, since 
  there the start positions are not really needed and are just 
  historical anyway.

-- David