Package firefox: Information

- New release (51.0.1).
- Fixed:
  + CVE-2017-5375: Excessive JIT code allocation allows bypass of ASLR and DEP
  + CVE-2017-5376: Use-after-free in XSL
  + CVE-2017-5377: Memory corruption with transforms to create gradients in Skia
  + CVE-2017-5378: Pointer and frame data leakage of Javascript objects
  + CVE-2017-5379: Use-after-free in Web Animations
  + CVE-2017-5380: Potential use-after-free during DOM manipulations
  + CVE-2017-5390: Insecure communication methods in Developer Tools JSON viewer
  + CVE-2017-5389: WebExtensions can install additional add-ons via modified host requests
  + CVE-2017-5396: Use-after-free with Media Decoder
  + CVE-2017-5381: Certificate Viewer exporting can be used to navigate and save to arbitrary filesystem locations
  + CVE-2017-5382: Feed preview can expose privileged content errors and exceptions
  + CVE-2017-5383: Location bar spoofing with unicode characters
  + CVE-2017-5384: Information disclosure via Proxy Auto-Config (PAC)
  + CVE-2017-5385: Data sent in multipart channels ignores referrer-policy response headers
  + CVE-2017-5386: WebExtensions can use data: protocol to affect other extensions
  + CVE-2017-5394: Android location bar spoofing using fullscreen and JavaScript events
  + CVE-2017-5391: Content about: pages can load privileged about: pages
  + CVE-2017-5392: Weak references using multiple threads on weak proxy objects lead to unsafe memory usage
  + CVE-2017-5393: Remove addons.mozilla.org CDN from whitelist for mozAddonManager
  + CVE-2017-5395: Android location bar spoofing during scrolling
  + CVE-2017-5387: Disclosure of local file existence through TRACK tag error messages
  + CVE-2017-5388: WebRTC can be used to generate a large amount of UDP traffic for DDOS attacks
  + CVE-2017-5374: Memory safety bugs fixed in Firefox 51
  + CVE-2017-5373: Memory safety bugs fixed in Firefox 51 and Firefox ESR 45.7

- New release (50.1.0).
- Fixed:
  + CVE-2016-9894: Buffer overflow in SkiaGL
  + CVE-2016-9899: Use-after-free while manipulating DOM events and audio elements
  + CVE-2016-9895: CSP bypass using marquee tag
  + CVE-2016-9896: Use-after-free with WebVR
  + 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-2016-9901: Data from Pocket server improperly sanitized before execution
  + CVE-2016-9902: Pocket extension does not validate the origin of events
  + CVE-2016-9903: XSS injection vulnerability in add-ons SDK
  + CVE-2016-9080: Memory safety bugs fixed in Firefox 50.1
  + CVE-2016-9893: Memory safety bugs fixed in Firefox 50.1 and Firefox ESR 45.6

- Precise calculation of the dependency on libgtk symbols (ALT#32297) and
  strict verification of unresolved symbols. (Thx legion@ for the original
  hack, which had to be removed in 44.0.2-alt3, but found to be restorable
  by ruslandh@'s work on strict unresolved symbols verification in palemoon.)