php55-php security update

[5.5.21-4]

• fix more functions accept paths with NUL character #1213407
  [5.5.21-3]
• core: fix multipart/form-data request can use excessive
  amount of CPU usage CVE-2015-4024
• fix various functions accept paths with NUL character
  CVE-2015-4025, CVE-2015-4026, #1213407
• fileinfo: fix denial of service when processing a crafted
  file #1213442
• ftp: fix integer overflow leading to heap overflow when
  reading FTP file listing CVE-2015-4022
• phar: fix buffer over-read in metadata parsing CVE-2015-2783
• phar: invalid pointer free() in phar_tar_process_metadata()
  CVE-2015-3307
• phar: fix buffer overflow in phar_set_inode() CVE-2015-3329
• phar: fix memory corruption in phar_parse_tarfile caused by
  empty entry file name CVE-2015-4021
• pgsql: fix NULL pointer dereference CVE-2015-1352
• soap: fix type confusion through unserialize #1222538
• apache2handler: fix pipelined request executed in deinitialized
  interpreter under httpd 2.4 CVE-2015-3330