Implement Library Load Order Randomization

Bug: http://b/24047022
Change-Id: I36e05b403bfbaae8542a95147f9114a8b9c8ac0e
diff --git a/linker/linker_libc_support.c b/linker/linker_libc_support.c
index 4c49384..77a0252 100644
--- a/linker/linker_libc_support.c
+++ b/linker/linker_libc_support.c
@@ -15,7 +15,9 @@
  */
 
 #include "../libc/arch-common/bionic/__dso_handle.h"
+#include "../libc/arch-common/bionic/pthread_atfork.h"
 
 int atexit(void (*function)(void) __attribute__((__unused__))) {
   return -1;
 }
+