Merge branch 'PHP-5.4' of https://git.php.net/push/php-src into PHP-5.4

* 'PHP-5.4' of https://git.php.net/push/php-src:
  updated NEWS
  Fixed bug #64770 stream_select() fails with pipes
re-work walkaround for net-snmp BUGid 2027834, no need to detect it anymore
add test for Bug #64159
bump default buffer size for values(32->512): do not reallocate buffers in 99% cases
Merge branch 'PHP-5.4' into PHP-5.5

* PHP-5.4:
  re-work walkaround for net-snmp BUGid 2027834, no need to detect it anymore add test for Bug #64159 bump default buffer size for values(32->512): do not reallocate buffers in 99% cases