Updated php/xmlrpc-epi/timezone packages fix security vulnerability

Stack-based buffer overflow vulnerability in virtual_file_ex() (CVE-2016-6289). Use After Free in unserialize() with Unexpected Session Deserialization (CVE-2016-6290). Out of bound read in exif_process_IFD_in_MAKERNOTE() (CVE-2016-6291). NULL Pointer Dereference in exif_process_user_comment() (CVE-2016-6292). locale_accept_from_http() out-of-bounds access (CVE-2016-6294). Use After Free Vulnerability in SNMP with GC and unserialize() (CVE-2016-6295). heap-buffer-overflow (write) simplestring_addn() simplestring.c in php-xmlrpc (CVE-2016-6296). Stack-based buffer overflow vulnerability in php_stream_zip_opener() (CVE-2016-6297). The php package has been updated to version 5.6.24, fixing these issues and several other bugs. See the upstream ChangeLog for details. The CVE-2016-6296 issue was in the xmlrpc-epi library, which has been patched. Additionally, the timezone and php-timezonedb packages have been updated with the latest timezone data.