Add fopen64/freopen64/tmpfile64 aliases.

Our fopen/freopen/tmpfile are already always O_LARGEFILE, but let's add
the aliases for _LARGEFILE_SOURCE compatibility.

Bug: http://b/24807045
Change-Id: I5d99b3ef3c9f27ce70f13313f6a92e96c7f21f80
diff --git a/libc/libc.map.txt b/libc/libc.map.txt
index e2aede5..c859d81 100644
--- a/libc/libc.map.txt
+++ b/libc/libc.map.txt
@@ -1252,7 +1252,9 @@
     __write_chk;
     fgetpos64;
     fileno_unlocked;
+    fopen64;
     freeifaddrs;
+    freopen64;
     fseeko64;
     fsetpos64;
     ftello64;
@@ -1284,6 +1286,7 @@
     scandirat;
     scandirat64;
     strchrnul;
+    tmpfile64;
 } LIBC;
 
 LIBC_PRIVATE {