Log Message:
Update to 2.2.7:

* "Mark all read" was added to the folder context menu.
* "Set as (not) junk mail" was added to the summary context menu.
* The option to filter junk mails before normal filtering was added.
* When replying to all, the original address strings are used for Cc
  instead of stripped ones.
* Windows-1257 was added for display encoding.
* Some menu items of the folder context menu were enabled even on receiving
  messages.
* The bug that manual junk filtering didn't work when no filter rule exist
  was fixed.
* Several crash bugs were fixed.
* Win32: libgpg-error-0.dll and libgpgme-11.dll was updated.
* Win32: The scanning of folders was optimized so that receiving or moving
  of messages become faster when folders contain large number of messages.