glibc security update

2.17-106.0.1.4 - Remove strstr and strcasestr implementations using sse4.2 instructions. - Upstream commits 584b18eb4df61ccd447db2dfe8c8a7901f8c8598 and 1818483b15d22016b0eae41d37ee91cc87b37510 backported. 2.17-106.4 - Revert problematic libresolv change, not needed for the CVE-2015-7547 fix...