Use a separate config.h for config like defines.

This allows an easier way to share config parameters between unit tests
and the bionic code.

It also fixes a problem where the 32 bit bionic tests based on glibc, or
the cts list executable did not have the pvalloc,valloc tests.

Change-Id: Ib47942cb8a278252faa7498a6ef23e9578db544f
diff --git a/libc/bionic/malloc_debug_common.h b/libc/bionic/malloc_debug_common.h
index a0f9972..fb2f03d 100644
--- a/libc/bionic/malloc_debug_common.h
+++ b/libc/bionic/malloc_debug_common.h
@@ -37,6 +37,7 @@
 #include <stdint.h>
 #include <stdlib.h>
 
+#include "private/bionic_config.h"
 #include "private/libc_logging.h"
 
 #define HASHTABLE_SIZE      1543
@@ -61,12 +62,6 @@
 #define Malloc(function)  dl ## function
 #endif
 
-// valloc(3) and pvalloc(3) were removed from POSIX 2004. We do not include them
-// for LP64, but the symbols remain in LP32 for binary compatibility.
-#ifndef __LP64__
-#define HAVE_DEPRECATED_MALLOC_FUNCS 1
-#endif
-
 // =============================================================================
 // Structures
 // =============================================================================