Security update for MozillaThunderbird

This update to Thunderbird 38.2.0 fixes the following issues (bnc#940806):

* MFSA 2015-79/CVE-2015-4473
Miscellaneous memory safety hazards
* MFSA 2015-80/CVE-2015-4475 (bmo#1175396)
Out-of-bounds read with malformed MP3 file
* MFSA 2015-82/CVE-2015-4478 (bmo#1105914)
Redefinition of non-configurable JavaScript object properties
* MFSA 2015-83/CVE-2015-4479/CVE-2015-4480/CVE-2015-4493
Overflow issues in libstagefright
* MFSA 2015-84/CVE-2015-4481 (bmo1171518)
Arbitrary file overwriting through Mozilla Maintenance Service
with hard links (only affected Windows)
* MFSA 2015-85/CVE-2015-4482 (bmo#1184500)
Out-of-bounds write with Updater and malicious MAR file
(does not affect openSUSE RPM packages which do not ship the
updater)
* MFSA 2015-87/CVE-2015-4484 (bmo#1171540)
Crash when using shared memory in JavaScript
* MFSA 2015-88/CVE-2015-4491 (bmo#1184009)
Heap overflow in gdk-pixbuf when scaling bitmap images
* MFSA 2015-89/CVE-2015-4485/CVE-2015-4486 (bmo#1177948, bmo#1178148)
Buffer overflows on Libvpx when decoding WebM video
* MFSA 2015-90/CVE-2015-4487/CVE-2015-4488/CVE-2015-4489
Vulnerabilities found through code inspection
* MFSA 2015-92/CVE-2015-4492 (bmo#1185820)
Use-after-free in XMLHttpRequest with shared workers

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