(svn r2391) - Feature: saving games happen in a seperate thread so you no longer will have to wait such a long time (especially handy on bigger maps and multiplayer games). The mouse also changes into the 'ZZZ' state :P. The thread on windows is currently given a little-bit-less-than-normal priority so it should not interfere that much with the gameplay; it will take a bit longer though. Upon the exit of the game any pending saves are waited upon.

- Fix: fixed GetSavegameFormat() so that it takes the best compressor (highest), or a forced one added with the parameter
- Open issues: 
1. Don't attempt to load a game while saving is in progress, it will kick you back to the intro-screen with only the vast ocean to look at.
2. The server is disabled from threaded-saving, but might be enabled in the future.
3. Current implementation only allows 1 additional running thread.
4. Stupid global variables.....grrr
Big thanks for TrueLight and the amazing memorypool :D

lang/english.txt

@@ -857,6 +857,8 @@ STR_032C_3_AIR_SERVICE                                          :{BLACK}3: Air s
 STR_032D_4_SHIP_SERVICE                                         :{BLACK}4: Ship service
 STR_032E_5_RAILROAD_SERVICE_ADVANCED                            :{BLACK}5: Railway service (advanced)
 STR_032F_AUTOSAVE                                               :{RED}AUTOSAVE
+STR_SAVING_GAME                                                 :{RED}*  *  SAVING GAME  *  *
+STR_SAVE_STILL_IN_PROGRESS                                      :{WHITE}Saving still in progress,{}please wait until it is finished!
 STR_0330_SELECT_EZY_STREET_STYLE                                :{BLACK}Select 'Ezy Street style music' programme
 
 STR_0335_6                                                      :{BLACK}6