Patch for fixing std::atomic support for function pointers for the Intel
Composer XE 2016 (compiler version 16.0).

To apply:
  cd /opt/intel/compilers_and_libraries_2016/mac/include
  sudo patch -p1 < /path-to-this-file/icc2016_mac.diff

--- include/stdatomic.h.orig 2015-08-28 15:05:13.000000000 -0700
+++ include/stdatomic.h      2015-08-28 15:19:25.000000000 -0700
@@ -451,7 +451,7 @@
     }
     _STRONG_INLINE atomic() _DEFAULTED
     _STRONG_INLINE _CONSTEXPR atomic(T* _Ptr)
-    : atomic_address(_Ptr)
+    : atomic_address((void*)_Ptr)
     {
     }
     _STRONG_INLINE T* operator+=(ptrdiff_t _V) volatile