Map cycling for HW

how to use:

this is a SERVER side mod, so only server needs to have the
new hwprogs.dat and strings.txt. Just save strings.txt and hwprogs.dat
in your hw folder (overwrite old ones, recommended to back them up before).
You can then edit strings.txt map names for thos you want.

NOTES:

1. map names must stay between map_sequence_start and map_sequence_end
2. only the first occurence of a mapname is used to determine next map
3. if server is running a map that is not in the list the same map will
   reload when game ends.
4. when server reaches the end of the list, the last map reloads when game ends
   it does NOT make a loop. To make a loop, you must add the name of the first 
   map after the last one (it looks for a mapname matching current one and takes
   the following name for next map)
5. you can put any number of maps in it
6. you may remove this entry or use old strings.txt, server will work as without that mod.

