Security update for MozillaFirefox (important)

This update for MozillaFirefox fixes the following issues:

• update to Firefox 52.6esr (boo#1077291) MFSA 2018-01

  • Speculative execution side-channel attack ("Spectre") MFSA 2018-03
  • CVE-2018-5091 (bmo#1423086) Use-after-free with DTMF timers
  • CVE-2018-5095 (bmo#1418447) Integer overflow in Skia library during
    edge builder allocation
  • CVE-2018-5096 (bmo#1418922) Use-after-free while editing form elements
  • CVE-2018-5097 (bmo#1387427) Use-after-free when source document is
    manipulated during XSLT
  • CVE-2018-5098 (bmo#1399400) Use-after-free while manipulating form
    input elements
  • CVE-2018-5099 (bmo#1416878) Use-after-free with widget listener
  • CVE-2018-5102 (bmo#1419363) Use-after-free in HTML media elements
  • CVE-2018-5103 (bmo#1423159) Use-after-free during mouse event handling
  • CVE-2018-5104 (bmo#1425000) Use-after-free during font face
    manipulation
  • CVE-2018-5117 (bmo#1395508) URL spoofing with right-to-left text
    aligned left-to-right
  • CVE-2018-5089 Memory safety bugs fixed in Firefox 58 and Firefox ESR
    52.6

• Added additional patches and configurations to fix builds on s390 and
  PowerPC.

  • Added firefox-glibc-getrandom.patch effecting builds on s390 and
    PowerPC
  • Added mozilla-s390-bigendian.patch along with icudt58b.dat bigendian
    ICU data file for running Firefox on bigendian architectures
    (bmo#1322212 and bmo#1264836)
  • Added mozilla-s390-nojit.patch to enable atomic operations used by the
    JS engine when JIT is disabled on s390
  • Build configuration options specific to s390
  • Requires NSS >= 3.29.5