Update XDG information in support of bug report 892.

src/abakus.desktop

@@ -1,7 +1,7 @@
 [Desktop Entry]
 Encoding=UTF-8
 Type=Application
-X-KDE-StartupNotify=true
+X-TDE-StartupNotify=true
 Exec=abakus -caption "%c" %i %m
 Icon=abakus
 Comment=
@@ -34,4 +34,4 @@ GenericName[sr@Latn]=Računaljka
 GenericName[sv]=Miniräknare
 GenericName[tr]=Hesap Makinesi
 GenericName[xx]=xxCalculatorxx
-Categories=Qt;KDE;Utility
+Categories=Qt;TDE;Utility