squid: update to 5.7, patch for cross-compile

srcpkgs/squid/patches/001-cross_compile.patch

@@ -0,0 +1,9 @@
+From: https://raw.githubusercontent.com/hongkongkiwi/openwrt-squid/master/patches/001-cross_compile.patch
+
+--- a/src/Makefile.in
++++ b/src/Makefile.in
+@@ -7761,3 +7761,3 @@ cache_cf.o: cf_parser.cci
+ cf_gen$(EXEEXT): $(cf_gen_SOURCES) $(cf_gen_DEPENDENCIES) cf_gen_defines.cci
+-	$(BUILDCXX) $(BUILDCXXFLAGS) -o $@ $(srcdir)/cf_gen.cc -I$(srcdir) -I$(top_builddir)/include/ -I$(top_builddir)/src
++	g++ -o $@ $(srcdir)/cf_gen.cc -I$(srcdir) -I$(top_builddir)/include/ -I$(top_builddir)/src
+

srcpkgs/squid/template

@@ -1,6 +1,6 @@
 # Template file for 'squid'
 pkgname=squid
-version=5.3
+version=5.7
 revision=1
 build_style=gnu-configure
 configure_args="
@@ -65,7 +65,7 @@ license="GPL-2.0-or-later"
 homepage="http://www.squid-cache.org/"
 changelog="http://www.squid-cache.org/Versions/v5/changesets/"
 distfiles="http://www.squid-cache.org/Versions/v5/squid-${version}.tar.xz"
-checksum=45178588df1311ded41ebadd632840c4d93a8d7f5f60e38e74acf2f1ae2f1715
+checksum=6b0753aaba4c9c4efd333e67124caecf7ad6cc2d38581f19d2f0321f5b7ecd81
 system_accounts="squid"
 # squid-conf-tests requires a squid user in the system
 make_check=no