Make gcov work again. refs #1921. [t:1921]

git-svn-id: file:///svn/toku/tokudb@13803 c7de825b-a66e-492c-adef-691d508d4ae1

db-benchmark-test/scanscan.c

@@ -2,7 +2,7 @@
 #define DONT_DEPRECATE_MALLOC
 
 #include <toku_portability.h>
-#include <assert.h>
+#include <toku_assert.h>
 #include <db.h>
 #include <errno.h>
 #include <stdlib.h>