possibility of overlay leakage by making them volatile.
* allout-widgets.el (allout-widgets-tally): Define as nil so the hash is
not shared between buffers. Mode initialization is responsible for giving
it a useful starting value.
(allout-item-span): Reduce possibility of overlay leakage by making them
volatile.
(allout-widgets-count-buttons-in-region): Add diagnostic function for
tracking down overlay leaks.
(allout-widgets-icons-dark-subdir): Track relocations of icons
* lisp/allout.el: Remove commentary about remove encryption passphrase
mnemonic support and verification.
* etc/images/icons/allout-widgets/dark-bg,
etc/images/icons/allout-widgets/light-bg,
encrypted-locked.{xpm,png}, unlocked-encrypted.{xpm,png}: Reorganize icon
directories and files to reconcile against windows short-filename clashes.
structure with graphical widgets. 'allout-widgets' customize group is an
'allout' subgroup, for easy discovery.
* etc/images/icons/allout-widgets-dark-bg,
etc/images/icons/allout-widgets-light-bg: Icons for new allout-widgets.el.
* etc/images/icons/README: Include coypright and GPL 3 license for new
icons.
