Brief: //dnl ch75

- More map editor fixes and map inventory pool performance improvement for big maps.
Details:
- Fix not showing expected messagebox on exit (ALT+x) which also throw exception and goes to improper mapeditor exit.
- Fix second annoying sticky message which shouldn't popup during map loading and performing RemoveProhibitedAttachments.
- Fix CTD when delete all enemies or civilians or all of them in map.
- Fix some std exception when reporting for missing optional xml file.
- Fix memory and map corruption in old mapeditors if loaded old map has item with invalid attachment and we try to attach something else.
- As years ago pInventoryPoolList had migrated from WORLDITEM* array to std::vector<WORLDITEM> it was time to do that with gWorldItems too, all necessary functions which need to be adopted to gWorldItems std::vector type are also changed.
- Resize code for gWorldItems is changed hoping will lead into less corruption problems as now could occur in mapeditor and game when code automatically doing attachment changes.
- Change code for handling map inventory which now should be fast enough to support AIMNAS project which will probably deal with thousands of items per map.


git-svn-id: https://ja2svn.mooo.com/source/ja2/trunk/GameSource/ja2_v1.13/Build@6554 3b4a5df2-a311-0410-b5c6-a8a6f20db521

Strategic/XML_ExtraItems.cpp

@@ -209,6 +209,8 @@ void AddExtraItems(UINT8 x, UINT8 y, UINT8 z, bool sectorIsLoaded)
 	}
 
 	strcat(fileName, ".xml");
+	if(!FileExists(fileName))//dnl ch75 261013 just to avoid sdd::exception under debug from VFS when file not exist
+		return;
 
 	// Open extra items file
 	HWFILE hFile;