boost: fix Clang > 3.5 -Wunused-local-typedefs in concept_check

Change-Id: I84ee651a51e1919be036ffd47d80eb1ab7433973

external/boost/UnpackedTarball_boost.mk

@@ -93,6 +93,8 @@ boost_patches += boost_1_59_0.multi_array.wshadow.patch
 boost_patches += boost_1_59_0.signal2.wshadow.patch
 # https://svn.boost.org/trac/boost/ticket/11501
 boost_patches += boost_1_59_0.property_tree.wreturn-type.patch
+# fixed upstream by bdcd06c4cc1971d763e528b8cb1d0f16fcc5ecf4
+boost_patches += boost.concept_check.Wunused-local-typedefs.warnings.patch.1
 
 $(eval $(call gb_UnpackedTarball_UnpackedTarball,boost))
 

external/boost/boost.concept_check.Wunused-local-typedefs.warnings.patch.1

+Fixed differently upstream by commit bdcd06c4cc1971d763e528b8cb1d0f16fcc5ecf4
+
+--- boost/boost/concept/detail/general.hpp.orig	2015-07-31 14:03:08.184447736 +0200
++++ boost/boost/concept/detail/general.hpp	2015-07-31 14:03:10.048447591 +0200
+@@ -67,7 +67,7 @@
+ 
+ // Version check from https://svn.boost.org/trac/boost/changeset/82886
+ // (boost/static_assert.hpp)
+-#if defined(__GNUC__) && ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 7))) 
++#if defined(__GNUC__) && (((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 7))) || defined(__clang__))
+ #define BOOST_CONCEPT_UNUSED_TYPEDEF __attribute__((unused))
+ #else
+ #define BOOST_CONCEPT_UNUSED_TYPEDEF /**/