php: security bump to version 5.5.8

Fixes CVE-2013-6712.
Note that there's no xz format tarball for 5.5.8.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/php/php.mk

@@ -4,8 +4,7 @@
 #
 ################################################################################
 
-PHP_VERSION = 5.5.7
-PHP_SOURCE = php-$(PHP_VERSION).tar.xz
+PHP_VERSION = 5.5.8
 PHP_SITE = http://www.php.net/distributions
 PHP_INSTALL_STAGING = YES
 PHP_INSTALL_STAGING_OPT = INSTALL_ROOT=$(STAGING_DIR) install