Move DBManager and DB natives from core to logic (bug 5953, r=fyren).

--HG--
rename : core/Database.cpp => core/logic/Database.cpp
rename : core/Database.h => core/logic/Database.h
rename : core/sm_simple_prioqueue.h => core/logic/sm_simple_prioqueue.h
rename : core/smn_database.cpp => core/logic/smn_database.cpp
rename : core/sm_queue.h => public/sm_queue.h

core/logic/AMBuilder

@@ -60,7 +60,9 @@ files = [
 	'NativeOwner.cpp',
 	'NativeInvoker.cpp',
 	'ExtensionSys.cpp',
-	'DebugReporter.cpp'
+	'DebugReporter.cpp',
+	'Database.cpp',
+	'smn_database.cpp',
 	]
 if AMBuild.target['platform'] == 'windows':
 	files.append('thread/WinThreads.cpp')