squid: security bump to version 3.5.18

Fixes:
CVE-2016-4553 - Cache Poisoning issue in HTTP Request handling
CVE-2016-4554 - Header Smuggling issue in HTTP Request processing
CVE-2016-4555 - Multiple Denial of Service issues in ESI Response
processing (client_side_request.cc)
CVE-2016-4556 - Multiple Denial of Service issues in ESI Response
processing (Esi.cc)

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/squid/squid.hash

@@ -1,3 +1,3 @@
-# From http://www.squid-cache.org/Versions/v3/3.5/squid-3.5.17.tar.xz.asc
-md5	2dc73cc01e77b1bd16d9070780ae79b1	squid-3.5.17.tar.xz
-sha1	8ef6fe7d778df9538a4aa29d7e8ace52246e7a23	squid-3.5.17.tar.xz
+# From http://www.squid-cache.org/Versions/v3/3.5/squid-3.5.18.tar.xz.asc
+md5	9ae3843c341e8a142e963ab937c51cdd	squid-3.5.18.tar.xz
+sha1	cd0596fdc3d6f11bb0ed50d8deb11ea950f0242d	squid-3.5.18.tar.xz

package/squid/squid.mk

@@ -5,7 +5,7 @@
 ################################################################################
 
 SQUID_VERSION_MAJOR = 3.5
-SQUID_VERSION = $(SQUID_VERSION_MAJOR).17
+SQUID_VERSION = $(SQUID_VERSION_MAJOR).18
 SQUID_SOURCE = squid-$(SQUID_VERSION).tar.xz
 SQUID_SITE = http://www.squid-cache.org/Versions/v3/$(SQUID_VERSION_MAJOR)
 SQUID_LICENSE = GPLv2+