Update configure to support neon-0.31.1
Bug: https://bugs.gentoo.org/719954

--- a/configure
+++ b/configure
@@ -6800,7 +6800,7 @@
 $as_echo "$ne_cv_lib_neon" >&6; }
     if test "$ne_cv_lib_neon" = "yes"; then
        ne_cv_lib_neonver=no
-       for v in 27 28 29 30; do
+       for v in 27 28 29 30 31; do
           case $ne_libver in
           0.$v.*) ne_cv_lib_neonver=yes ;;
           esac
@@ -6983,8 +6983,8 @@
     neon_got_library=yes
 
 else
-    { $as_echo "$as_me:${as_lineno-$LINENO}: incompatible neon library version $ne_libver: wanted 0.27 28 29 30" >&5
-$as_echo "$as_me: incompatible neon library version $ne_libver: wanted 0.27 28 29 30" >&6;}
+    { $as_echo "$as_me:${as_lineno-$LINENO}: incompatible neon library version $ne_libver: wanted 0.27 28 29 30 31" >&5
+$as_echo "$as_me: incompatible neon library version $ne_libver: wanted 0.27 28 29 30 31" >&6;}
     neon_got_library=no
 fi
 
@@ -7040,7 +7040,7 @@
 $as_echo "$ne_cv_lib_neon" >&6; }
     if test "$ne_cv_lib_neon" = "yes"; then
        ne_cv_lib_neonver=no
-       for v in 27 28 29 30; do
+       for v in 27 28 29 30 31; do
           case $ne_libver in
           0.$v.*) ne_cv_lib_neonver=yes ;;
           esac
@@ -7223,8 +7223,8 @@
     neon_got_library=yes
 
 else
-    { $as_echo "$as_me:${as_lineno-$LINENO}: incompatible neon library version $ne_libver: wanted 0.27 28 29 30" >&5
-$as_echo "$as_me: incompatible neon library version $ne_libver: wanted 0.27 28 29 30" >&6;}
+    { $as_echo "$as_me:${as_lineno-$LINENO}: incompatible neon library version $ne_libver: wanted 0.27 28 29 30 31" >&5
+$as_echo "$as_me: incompatible neon library version $ne_libver: wanted 0.27 28 29 30 31" >&6;}
     neon_got_library=no
 fi