Rename LIBC64_HIDDEN to LIBC32_LEGACY_PUBLIC.

Change-Id: If4da9e46398ca5524f6f0680d70588e3dc7e80b4
diff --git a/libc/stdio/glue.h b/libc/stdio/glue.h
index a9e5d10..cb1d182 100644
--- a/libc/stdio/glue.h
+++ b/libc/stdio/glue.h
@@ -47,6 +47,6 @@
 };
 
 /* This was referenced by a couple of different pieces of middleware and the Crystax NDK. */
-__LIBC64_HIDDEN__ extern struct glue __sglue;
+__LIBC32_LEGACY_PUBLIC__ extern struct glue __sglue;
 
 __END_DECLS