More unused stuff removal (#49)

* More unused stuff removal

delete:
- giant 'metaheaders' (JA2 All.h, Laptop All.h, etc), preferring to add #includes directly where needed
- unused ExceptionHandling and DbMan translation units
- unused WizShare.h, Bitmap.h, trle.h, video_private.h headers

* remove mentions from vc proj files too

* remove preprocessor conditionals for unused definitions

find . -iname '*.h' -o -iname '*.cpp' -exec unifdef.exe -m -UPRECOMPILED_HEADERS -UJA2_PRECOMPILED_HEADERS -UWIZ8_PRECOMPILED_HEADERS -UPRECOMPILEDHEADERS {} ';'

then manually fixed a couple files the tool errored out on

* yes, the comments too

as title

Strategic/Map Screen Helicopter.cpp

@@ -1,6 +1,3 @@
-#ifdef PRECOMPILEDHEADERS
-	#include "Strategic All.h"
-#else
 	#include "Map Screen Helicopter.h"
 	#include "LaptopSave.h"
 	#include "Vehicles.h"
@@ -44,7 +41,6 @@
 	#include "expat.h"
 	#include "merc entering.h"	// added by Flugente
 	#include "ASD.h"			// added by Flugente
-#endif
 
 #include "Vehicles.h"
 #include "NPC.h"