move docs into application folders

- required for upcoming Git migration with repository per app / lib
- if nobody complains, I will backport it in a few days to the 4.10 branch also
- I will update trunk/l10n-kde4/scripts/documentation_paths in my next commit

svn path=/trunk/KDE/kdenetwork/krfb/; revision=1340343

CMakeLists.txt

@@ -48,6 +48,7 @@ endif(Q_WS_X11)
 add_subdirectory(libvncserver)
 add_subdirectory(krfb)
 add_subdirectory (framebuffers)
+add_subdirectory(doc)
 
 if (NOT INSIDE_KDENETWORK)
     macro_display_feature_log()