Unify file metadata handler location -- tag changing code should go in

here too

src/libtomahawk/CMakeLists.txt

@@ -263,6 +263,13 @@ set( libSources
 
     filemetadata/MusicScanner.cpp
     filemetadata/ScanManager.cpp
+    filemetadata/taghandlers/tag.cpp
+    filemetadata/taghandlers/apetag.cpp
+    filemetadata/taghandlers/asftag.cpp
+    filemetadata/taghandlers/id3v1tag.cpp
+    filemetadata/taghandlers/id3v2tag.cpp
+    filemetadata/taghandlers/mp4tag.cpp
+    filemetadata/taghandlers/oggtag.cpp
 
     network/BufferIoDevice.cpp
     network/MsgProcessor.cpp
@@ -284,14 +291,6 @@ set( libSources
     playlist/dynamic/database/DatabaseControl.cpp
     playlist/dynamic/DynamicControl.cpp
 
-    taghandlers/tag.cpp
-    taghandlers/apetag.cpp
-    taghandlers/asftag.cpp
-    taghandlers/id3v1tag.cpp
-    taghandlers/id3v2tag.cpp
-    taghandlers/mp4tag.cpp
-    taghandlers/oggtag.cpp
-
     utils/TomahawkUtils.cpp
     utils/Logger.cpp
     utils/Qnr_IoDeviceStream.cpp