Unbreak check-name-clashes.py after recent macro renamings.

This should have been part of https://codereview.chromium.org/1056863002/. :-/

TBR=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/1070593002

Cr-Commit-Position: refs/heads/master@{#27647}

tools/check-name-clashes.py

@@ -9,7 +9,7 @@ import re
 import sys
 
 FILENAME = "src/runtime/runtime.h"
-LISTHEAD = re.compile(r"#define\s+(\w+LIST\w*)\((\w+)\)")
+LISTHEAD = re.compile(r"#define\s+(FOR_EACH_\w+)\((\w+)\)")
 LISTBODY = re.compile(r".*\\$")