* src/modest-ui-actions.[ch]:

* src/modest-ui-actions.[ch]:
        * Implemented ..._on_attachment_clicked, calling view attachment in view.
        * Added actions ..._on_attach_file, ..._on_remove_attachments.
        * Added support for "select all" action when attachment is focused.
        * Added actions ..._view_attachment, ..._save_attachments,
          ..._remove_attachments.
* src/modest-text-utils.c:
        * Now the ..._get_display_size should show correctly a 0 bytes size.
* src/maemo/modest-main-window-ui.h:
        * Added view, save and remove attachment actions.
* src/maemo/modest-msg-edit-window.c:
        * Added text_buffer_delete_range handler, to remove image attachments when
          they're removed in the body editor.
        * ..._add_attachment_clicked handler, to show the add attachment dialog
          when user clicks the attachment button. (fixes NB#56314).
        * Added ..._attach_file method, to show the dialog to attach one or more
          files, and attach them to the message.
        * Added ..._remove_attachments method, to remove the selected attachments.
* src/maemo/modest-platform.c:
        * Now osso_context is a module static pointer, to let platform function use
          this.
        * Added implementation of modest_platform_activate_file using hildon/osso
          mime libraries.
* src/maemo/modest-msg-view-window.c:
        * ..._update_dimmed now also updates the attachment actions depending on the
          current selection.
        * Removed some debugging messages.
        * Added ..._view_attachment method, to view the currently selected attachment.
          If it's a message, it opens a new message view. If it's an attachment, it
          calls the default handler.
        * Added ..._save_attachments method. This method shows a dialog to select
          the folder location to save (or the full path if only one attachment will be
          saved).
        * Added ..._remove_attachments method (with no implementation currently).
* src/maemo/modest-maemo-utils.[ch]:
        * Added ..._folder_writable method, that checks if a folder is writable.
        * Added ..._file_exists, that checks if a file path corresponds to an existing
          file.
        * Added ..._create_temp_stream, that creates a temporary file and a corresponding
          TnyFsStream.
* src/maemo/ui/modest-msg-edit-window-ui.xml:
        * Added attach file and remove attachment menu actions.
* src/maemo/ui/modest-msg-view-window-ui.xml:
        * Added attach file, save attachments and remove attachments menu actions.
* src/modest-platform.h:
        * New activate file method.
* src/gnome/modest-msg-edit-window.c:
        * Added new stub functions.
* src/gnome/modest-platform.c:
        * Added new stub functions.
* src/gnome/modest-msg-view-window.c:
        * Added new stub functions.
* src/widgets/modest-msg-edit-window.h:
        * Added methods to attach file and remove attachments.
* src/widgets/modest-msg-view.[ch]:
        * Remove debugging messages.
        * New ..._get_selected_attachments method, that obtains the TnyMimePart's of
          current selection in attachments view.
* src/widgets/modest-attachment-view.[ch]:
        * Removed activated signal. Now activation is completely managed in
          ModestAttachmentsView.
        * Added support for showing attached messages.
        * Removed the button press and button release
        * Now labels are not selectable (selection is managed in ModestAttachmentsView).
        * Now it inherits from GtkEventBox.
* src/widgets/modest-msg-view-window.h:
        * Added attachment methods.
* src/widgets/modest-attachments-view.[ch]:
        * Now it inherits from an event box.
        * Minor style fixes.
        * Added support for attaching messages.
        * New ..._remove_attachment method, to remove attachments corresponding to a
          specific TnyMimePart.
        * New ..._remove_attachment_by_id, to remove attachments corresponding to a
          specific content id.
        * Button events handling for rubber banding, selection, and activation.
        * Keyboard events handling for selection and activation.
        * Internal methods to handle selections: unselect_all, get_att_view_att_coords,
          set_selected, select_range.
        * Internal methods to handle clipboard selection.
        * New ..._get_selection method, that obtains the mime parts of the selected
          items.
        * New ..._select_all method, that selects all the attachments.
* src/widgets/modest-msg-edit-window-ui.h:
        * Added actions for attachments.
* configure.ac:
        * Now maemo target depends on libtinymail-gnomevfs.

pmo-trunk-r1795