php5: upgrade to 5.4.34 (fixes #502)

This addresses CVE-2014-3668, CVE-2014-3669 and CVE-2014-3670
according to PHP's release notes.

Signed-off-by: Michael Heimpold <mhei@heimpold.de>
Merge pull request #520 from mhei/php5-oldstable

php5: upgrade to 5.4.34 (fixes #502)