Log Message:
Update to 45.6.0

Changelog:
    Fixed The system integration dialog was shown every time when starting \ 
Thunderbird
    Fixed Various security fixes

Security vulnerabilities fixed in Thunderbird 45.6
 #CVE-2016-9899: Use-after-free while manipulating DOM events and audio elements
 #CVE-2016-9895: CSP bypass using marquee tag
 #CVE-2016-9897: Memory corruption in libGLES
 #CVE-2016-9898: Use-after-free in Editor while manipulating DOM subtrees
 #CVE-2016-9900: Restricted external resources can be loaded by SVG images \ 
through data URLs
 #CVE-2016-9904: Cross-origin information leak in shared atoms
 #CVE-2016-9905: Crash in EnumerateSubDocuments
 #CVE-2016-9893: Memory safety bugs fixed in Thunderbird 45.6