Bugfixes
* Some attachments couldn't be opened in messages originating from
MS Outlook 2016
* Address book import from CSV
* Performance problem in message body search
* Ctrl+Enter to send a message would open an attachment if the
attachment pane had focus
* Calendar: Issues with "Today Pane" start-up
* Calendar: Glitches with custom repeat and reminder number input
* Calendar: Problems with WCAP provider
- add mozilla-bmo1585099.patch to fix build with rust >= 1.38
OBS-URL: https://build.opensuse.org/package/show/mozilla:Factory/MozillaThunderbird?expand=0&rev=496
