Start making the Maemo support more generic.

This includes:
    - decoupling deploy configurations from targets (Reviewed-by: dt)
    - adding a "Generic Linux" device type
    - splitting up the Maemo deployment step into small pieces that
      can be combined in different ways (and much more easily maintained)
    - adding a new version handler for pro.user files
      (Reviewed-by: Tobias Hunger)

Also:
  - Add and use an SSH manager class for easier connection sharing.
  - Make the SSH connection parameters a fixed attribute of the connection.

src/plugins/qt4projectmanager/qt-maemo/maemodebugsupport.cpp

@@ -34,8 +34,8 @@
 
 #include "maemodebugsupport.h"
 
+#include "abstractmaemodeploystep.h"
 #include "maemodeployables.h"
-#include "maemodeploystep.h"
 #include "maemoglobal.h"
 #include "maemosshrunner.h"
 #include "maemousedportsgatherer.h"