[COMMITTED 2.24 PATCH] NaCl: Fix libc.abilist missing GLIBC_2.24 A.

[Roland McGrath]

Somebody fixed this on trunk (silently, as part of a 2.25 ABI change) after
it was broken by an earlier change, but the 2.24 branch was never fixed.
Now it is.

	* sysdeps/arm/nacl/libc.abilist: Add GLIBC_2.24 A.

diff --git a/sysdeps/arm/nacl/libc.abilist b/sysdeps/arm/nacl/libc.abilist
index 2f7751d..dfa7198 100644
--- a/sysdeps/arm/nacl/libc.abilist
+++ b/sysdeps/arm/nacl/libc.abilist
@@ -1840,4 +1840,5 @@ GLIBC_2.23 fts64_close F
 GLIBC_2.23 fts64_open F
 GLIBC_2.23 fts64_read F
 GLIBC_2.23 fts64_set F
+GLIBC_2.24 GLIBC_2.24 A
 GLIBC_2.24 quick_exit F