Log Message:
Update php53 to 5.3.25 (PHP 5.3.25).

09 May 2013, PHP 5.3.25

- Core:
  . Fixed bug #64578 (debug_backtrace in set_error_handler corrupts zend heap:
    segfault). (Laruence)
  . Fixed bug #64458 (dns_get_record result with string of length -1). (Stas)
  . Fixed bugs #47675 and #64577 (fd leak on Solaris). (Rasmus)

- Streams:
  . Fixed Windows x64 version of stream_socket_pair() and improved error
    handling. (Anatol Belski)

- Zip:
  . Fixed bug #64342 (ZipArchive::addFile() has to check for file existence).
    (Anatol)