Fixed the compilation using '--enable-fatal' and '--disable-deprecated' options

Fixed the compilation using '--enable-fatal' and '--disable-deprecated' options

* examples/hildon-banner-example.c: Protect deprecated hildon-banner
functions with #ifndef HILDON_DISABLE_DEPRECATED
* examples/hildon-find-toolbar.c: Protect deprecated
HILDON_ICON_SIZE_TOOLBAR with #ifndef HILDON_DISABLE_DEPRECATED
* hildon/hildon-find-toolbar.c: Change deprecated HILDON_ICON_SIZE_TOOLBAR
in favor of HILDON_ICON_PIXEL_SIZE_FINGER
* hildon/hildon-private.h: Unmark hildon_privfate_create_animation() as
deprecated.
* hildon/hildon-stackable-window.c: Added #undef HILDON_DISABLE_DEPRECATED
to allow proper compilation of deprecated functions defined on the header