Rename __bionic_clone_entry to __start_thread.

This seems a bit less obscure.

Change-Id: I7dc528c253b73c861694f67556ad8f919bf92136
diff --git a/libc/arch-mips/bionic/__bionic_clone.S b/libc/arch-mips/bionic/__bionic_clone.S
index 7b138ae..4b4498d 100644
--- a/libc/arch-mips/bionic/__bionic_clone.S
+++ b/libc/arch-mips/bionic/__bionic_clone.S
@@ -60,8 +60,8 @@
         lw	a0,0(sp)	#  fn
         lw	a1,4(sp)	#  arg
 
-	# void __bionic_clone_entry(int (*func)(void*), void *arg)
-        la	t9,__bionic_clone_entry
+	# void __start_thread(int (*func)(void*), void *arg)
+        la	t9,__start_thread
         j	t9
 
 .L__error_bc: