Patch to correctly detect the neon architecture for multicore machines;
taken from the trunk of the gmp mercurial repository.

--- gmp-6.0.0.old/config.guess	2014-03-25 15:37:55.000000000 +0100
+++ gmp-6.0.0.new/config.guess	2015-07-03 09:03:15.009942296 +0200
@@ -199,8 +199,9 @@
       0xc14)	exact_cpu="armcortexr4";;	# v7r
       0xc15)	exact_cpu="armcortexr5";;	# v7r
       0xc23)	exact_cpu="armcortexm3";;	# v7m
+      *)        exact_cpu=$guess_cpu;;
   esac
-  exact_cpu="${exact_cpu}`sed -n 's;^Features.*\(neon\).*;\1;p' /proc/cpuinfo 2>/dev/null`"
+  exact_cpu="${exact_cpu}`sed -n 's;^Features.*\(neon\).*;\1;p' /proc/cpuinfo 2>/dev/null | head -n 1 2>/dev/null`"
   ;;
 
 ia64*-*-*)