vlc_object_find() but returns a list of _all_ the matching objects. Only
    works with FIND_ANYWHERE at the moment.
  * ./modules/gui/gtk/preferences.c, ./modules/gui/kde/preferences.cpp,
    ./modules/gui/win32/preferences.cpp: the module lists in the preferences
    menus work again.
  * ./src/misc/objects.c: added a missing sizeof that caused crashes because
    the reindexing of the global object array was incomplete.
  * ./include/modules_inner.h: propagated the module long description to its
    submodules.