Unify python shebangs

As per PEP-0394[1], there is no real concensus over what binary names
Python has, specifically 'python' could be Python 3, Python 2, or not
exist.

However, everyone has a python3 interpreter and the scripts are all
written for Python 3.  Unify the shebangs so that the ~50% of shebangs
that use python now use python3.

[1] https://peps.python.org/pep-0394/

Author: rossburton

clang-tools-extra/clang-include-fixer/find-all-symbols/tool/run-find-all-symbols.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #
 # =- run-find-all-symbols.py - Parallel find-all-symbols runner -*- python  -*-=#
 #

clang-tools-extra/clangd/test/remote-index/pipeline_helper.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #
 # ===- pipeline_helper.py - Remote Index pipeline Helper *- python -------*--===#
 #

clang/bindings/python/examples/cindex/cindex-dump.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 # ===- cindex-dump.py - cindex/Python Source Dump -------------*- python -*--===#
 #

clang/bindings/python/examples/cindex/cindex-includes.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 # ===- cindex-includes.py - cindex/Python Inclusion Graph -----*- python -*--===#
 #

clang/docs/tools/generate_formatted_state.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # A tool to parse creates a document outlining how clang formatted the
 # LLVM project is.
 

clang/test/Analysis/check-analyzer-fixit.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #
 # ===- check-analyzer-fixit.py - Static Analyzer test helper ---*- python -*-===#
 #

clang/test/Analysis/csv2json.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #
 # ===- csv2json.py - Static Analyzer test helper ---*- python -*-===#
 #

clang/test/Driver/ftime-trace-sections.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import json, sys, time
 

clang/tools/include-mapping/test.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # ===- test.py -  ---------------------------------------------*- python -*--===#
 #
 # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

clang/tools/scan-build/bin/set-xcode-analyzer

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 # [PR 11661] Note that we hardwire to /usr/bin/python because we
 # want to the use the system version of Python on Mac OS X.