[balsa] (28 commits) Non-fast-forward update to branch popover

[Peter Bloomfield <peterb src gnome org>]

The branch 'popover' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  faf88a7... pref-manager: Use GtkPopover for "Add" options
  8524d47... vfs: Port to GMenu
  6daa419... libbalsa-vfs: New API to use with GMenu
  cd25d53... various: Port to new LibBalsaVfs API
  5951324... body: Add a gpointer user_data member
  432090a... mblist: Port the MRU menu to GMenu
  400a849... Various: Adapt to MRU menu changes
  790b760... compose window: Break the attachment context menu
  4e75711... balsa-index: Port context menu to GtkPopover
  ed6f8ca... compose window: Improve popover placement
  02d371c... Bump Gtk requirement to 3.22
  1e0fc33... balsa-index: Improve context menu placement
  0ea2cd9... compose window: Improve context menu placement
  ce3aa32... balsa-message: Improve the GtkPopover popup
  3805924... compose window: Pop up the menu at the pointer
  dbd7560... balsa-message: Port another popup to GtkPopover
  8483b48... balsa-message: Port the parts-menu to GtkPopover
  10f2622... balsa-index, balsa-message: Check GdkEvent
  6319a6d... Various: Port menus to GtkPopover
  2b23996... balsa-mime-widget-text: Port HTML popup
  de6caba... Bump required versions
  77b849f... compose window: Port the language menu to GMenu
  5cdd56f... toolbars: Port the popup menu to GtkPopover
  ec8e173... Various: Be more systematic when making GMenu s
  292680e... balsa-index: Improve popup positioning at pointer
  638da4c... balsa-index: Change popup menu placement

Commits added to the branch:

  5489a9e... address-book: LibBalsaAddressBook is abstract (*)
  8275dc4... mailbox: LibBalsaMailbox is abstract (*)
  a50f903... pref-manager: Use GtkPopover for "Add" options
  a6ed401... vfs: Port to GMenu
  96fda9a... libbalsa-vfs: New API to use with GMenu
  4be853e... various: Port to new LibBalsaVfs API
  97278ef... body: Add a gpointer user_data member
  3dba6da... mblist: Port the MRU menu to GMenu
  da06e3b... Various: Adapt to MRU menu changes
  68d752e... compose window: Break the attachment context menu
  188d06e... balsa-index: Port context menu to GtkPopover
  26f9364... compose window: Improve popover placement
  cc7a116... Bump Gtk requirement to 3.22
  7456d01... balsa-index: Improve context menu placement
  91d9c25... compose window: Improve context menu placement
  f3116be... balsa-message: Improve the GtkPopover popup
  3f64508... compose window: Pop up the menu at the pointer
  128c456... balsa-message: Port another popup to GtkPopover
  97c15b5... balsa-message: Port the parts-menu to GtkPopover
  13d289a... balsa-index, balsa-message: Check GdkEvent
  9e8113d... Various: Port menus to GtkPopover
  8766582... balsa-mime-widget-text: Port HTML popup
  1edf1c1... Bump required versions
  dc5fb46... compose window: Port the language menu to GMenu
  0e73076... toolbars: Port the popup menu to GtkPopover
  833d0bb... Various: Be more systematic when making GMenu s
  6d02828... balsa-index: Improve popup positioning at pointer
  728eb89... balsa-index: Change popup menu placement

(*) This commit already existed in another branch; no separate mail sent