Imported Upstream version 17.0.8
Sawfisch: fix wrong size of resized window

Backported from the TB20 release.
https://bugzilla.mozilla.org/show_bug.cgi?id=813997

Closes: #715464

Signed-off-by: Carsten Schoenert <c.schoenert@t-online.de>
attachments: Fix error while saving a message to disk or network

If the user tries to save a message to disk or network share without
enough user rights to write the message Icedove fails silently. This
backport from TB 21 fix this.
KDE desktop file: shorten the icon name to 'Icedove'

Closes: 507962
fix JS compiler segfault errors for various platforms

Closes: #708331