[packages] php5: upgrade to 5.4.27

Signed-off-by: Michael Heimpold <mhei@heimpold.de>

git-svn-id: svn://svn.openwrt.org/openwrt/packages@40388 3c298f89-4303-0410-b956-a3cf2f4a3e73
[packages] php5: prepare pecl macros to distinguish between normal and zend extensions

Signed-off-by: Michael Heimpold <mhei@heimpold.de>

git-svn-id: svn://svn.openwrt.org/openwrt/packages@40389 3c298f89-4303-0410-b956-a3cf2f4a3e73