Rename iterate to malloc_iterate internally.

I have no idea why I used the iterate name internally which is
completely unlike every other function name. Change this to match
everyone else so that it's now malloc_iterate everywhere.

This is probably the last chance to change this before mainline
modules begin, so make everything consistent.

Test: Compiles, unit tests passes.
Change-Id: I56d293377fa0fe1a3dc3dd85d6432f877cc2003c
diff --git a/libc/malloc_hooks/malloc_hooks.cpp b/libc/malloc_hooks/malloc_hooks.cpp
index b1c1d50..1ba8696 100644
--- a/libc/malloc_hooks/malloc_hooks.cpp
+++ b/libc/malloc_hooks/malloc_hooks.cpp
@@ -67,7 +67,7 @@
 struct mallinfo hooks_mallinfo();
 int hooks_mallopt(int param, int value);
 int hooks_posix_memalign(void** memptr, size_t alignment, size_t size);
-int hooks_iterate(uintptr_t base, size_t size,
+int hooks_malloc_iterate(uintptr_t base, size_t size,
     void (*callback)(uintptr_t base, size_t size, void* arg), void* arg);
 void hooks_malloc_disable();
 void hooks_malloc_enable();
@@ -209,7 +209,7 @@
   return g_dispatch->posix_memalign(memptr, alignment, size);
 }
 
-int hooks_iterate(uintptr_t, size_t, void (*)(uintptr_t, size_t, void*), void*) {
+int hooks_malloc_iterate(uintptr_t, size_t, void (*)(uintptr_t, size_t, void*), void*) {
   return 0;
 }