remove use internal guichan flag.

From now manaplus can use only own forked guichan version.
move exguichan files into gui/base/
update translations.
fix compilation error.
Remove unused image base class.
move some methods from base/graphics into render/graphics.

Remove base/graphcs.
Remove useless graphics casts.
fix Android.mk after moving exguichan files.
Move some listeners classes into listeners directory.
move actionlistener from base into listeners.
move deathlistener from base into listeners.
move focuslistener from base into listeners.
move keylistener from base into listeners.
move mouselistener from base into listeners.
move selectionlistener from base into listeners.
move widgetlistener from base into listeners.
update translations.
fix files in make files.
fix make file again.
Add listeners dir into Android.mk