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

Laptop/mercs Files.cpp

@@ -1,7 +1,4 @@
 // WANNE 3 <changed some lines>
-#ifdef PRECOMPILEDHEADERS
-	#include "Laptop All.h"
-#else
 	#include "laptop.h"
 	#include "mercs Files.h"
 	#include "mercs.h"
@@ -33,7 +30,6 @@
 	#include "Personnel.h"
 	#include "Encyclopedia_new.h"	//update encyclopedia item visibility when viewing that item
 	#include "mousesystem.h"
-#endif
 
 #include "Cheats.h"
 #include "connect.h"