Use the installed/downloaded objdump instead of work-dir one.

pydir/run-pnacl-sz.py

Index: pydir/run-pnacl-sz.py
diff --git a/pydir/run-pnacl-sz.py b/pydir/run-pnacl-sz.py
index 97f4361cfb35a37077e3affb9ee272b07dd87463..2c0b03c08bdcaa59ef4884078fe0d8257f254444 100755
--- a/pydir/run-pnacl-sz.py
+++ b/pydir/run-pnacl-sz.py
@@ -121,7 +121,7 @@ def main():
       cmd += ['-o', asm_temp.name]
     if args.disassemble:
       # Show wide instruction encodings, diassemble, and show relocs.
-      cmd += (['&&', os.path.join(binutils_bin_path, 'objdump')] +
+      cmd += (['&&', os.path.join(binutils_bin_path, 'le32-nacl-objdump')] +
               args.dis_flags +
               ['-w', '-d', '-r', '-Mintel', asm_temp.name])