[clang-tidy] Python scripts shebang fixes

[omtcyf0]

Summary

This patch fixes shebang lines in Python script files.

Most Python scripts in LLVM & Clang are using this shebang line.

Here is an explanaiton of why such line should be used instead of what is currently in these few files.

[alexfh]

LG. Thanks! Do you need me to submit the patch?

[omtcyf0]

@alexfh, yes, please!

That'll be very nice.

clang-tools-extra/trunk/clang-tidy/tool/clang-tidy-diff.py

-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #===- clang-tidy-diff.py - ClangTidy Diff Checker ------------*- python -*--===#
 #
 #                     The LLVM Compiler Infrastructure
 #
 # This file is distributed under the University of Illinois Open Source
 # License. See LICENSE.TXT for details.
 #

clang-tools-extra/trunk/docs/clang-tidy/tools/dump_check_docs.py

-#!/usr/bin/python
+#!/usr/bin/env python
 
 r"""
 Create stubs for check documentation files.
 """
 
 import os
 import re
 import sys

clang-tools-extra/trunk/test/clang-tidy/check_clang_tidy.py

-#!/usr/bin/python
+#!/usr/bin/env python
 #
 #===- check_clang_tidy.py - ClangTidy Test Helper ------------*- python -*--===#
 #
 #                     The LLVM Compiler Infrastructure
 #
 # This file is distributed under the University of Illinois Open Source
 # License. See LICENSE.TXT for details.
 #