[dev-libs/Ice] slot depend on 5.6, its the only supported version here anyway.

dev-libs/Ice/Ice-3.6.1.ebuild

@@ -36,8 +36,8 @@ RDEPEND=">=dev-libs/expat-2.0.1
 	python? ( ${PYTHON_DEPS} )
 	ruby? ( $(ruby_implementation_depend ruby22) )
 	mono? ( dev-lang/mono )
-	php? ( >=dev-lang/php-5.3 )
-	php_namespaces? ( >=dev-lang/php-5.3 )
+	php? ( dev-lang/php:5.6 )
+	php_namespaces? ( >=dev-lang/php:5.6 )
 	!dev-python/IcePy
 	!dev-ruby/IceRuby"
 DEPEND="${RDEPEND}