security update to Firefox 17.0 and other Mozilla based packages (important)

update to Firefox/Thunderbird 17.0 and Seamonkey 2.14
(bnc#790140)

• MFSA 2012-91/CVE-2012-5842/CVE-2012-5843 Miscellaneous
  memory safety hazards
• MFSA 2012-92/CVE-2012-4202 (bmo#758200) Buffer overflow
  while rendering GIF images
• MFSA 2012-93/CVE-2012-4201 (bmo#747607) evalInSanbox
  location context incorrectly applied
• MFSA 2012-94/CVE-2012-5836 (bmo#792857) Crash when
  combining SVG text on path with CSS
• MFSA 2012-95/CVE-2012-4203 (bmo#765628) Javascript:
  URLs run in privileged context on New Tab page
• MFSA 2012-96/CVE-2012-4204 (bmo#778603) Memory
  corruption in str_unescape
• MFSA 2012-97/CVE-2012-4205 (bmo#779821) XMLHttpRequest
  inherits incorrect principal within sandbox
• MFSA 2012-99/CVE-2012-4208 (bmo#798264) XrayWrappers
  exposes chrome-only properties when not in chrome
  compartment
• MFSA 2012-100/CVE-2012-5841 (bmo#805807) Improper
  security filtering for cross-origin wrappers
• MFSA 2012-101/CVE-2012-4207 (bmo#801681) Improper
  character decoding in HZ-GB-2312 charset
• MFSA 2012-102/CVE-2012-5837 (bmo#800363) Script entered
  into Developer Toolbar runs with chrome privileges
• MFSA 2012-103/CVE-2012-4209 (bmo#792405) Frames can
  shadow top.location
• MFSA 2012-104/CVE-2012-4210 (bmo#796866) CSS and HTML
  injection through Style Inspector
• MFSA
  2012-105/CVE-2012-4214/CVE-2012-4215/CVE-2012-4216/
  CVE-2012-5829/CVE-2012-5839/CVE-2012-5840/CVE-2012-4212/