Security update for MozillaFirefox, MozillaFirefox-branding-SLE, mozilla-nss

This update for MozillaFirefox, MozillaFirefox-branding-SLE, mozilla-nss fixes the following issues: (bsc#963520) Mozilla Firefox was updated to 38.6.0 ESR. Mozilla NSS was updated to 3.20.2. The following vulnerabilities were fixed: - CVE-2016-1930: Memory safety bugs fixed in Firefox ESR 38.6 (bsc#963632) - CVE-2016-1935: Buffer overflow in WebGL after out of memory allocation (bsc#963635) - CVE-2016-1938: Calculations with mp_div and mp_exptmod in Network Security Services (NSS) canproduce wrong results (bsc#963731) The following improvements were added: - bsc#954447: Mozilla NSS now supports a number of new DHE ciphersuites - Tracking protection is now enabled by default - bsc#964332: Fixed leaking file descriptors inside FIPS selfcheck code