Consistently use env(1) to resolve bash and python paths

Author: James McLaughlin

test/1_stdlib/timeout.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # timeout.sh <seconds> <command...>
 

utils/benchmark/build.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 if [[ -n "$LLVM_DIR" ]]; then
     BUILD_DIR="$LLVM_DIR/build"

utils/build-script

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #===--- build-script - The ultimate tool for building Swift ----------------===#
 #
 ## This source file is part of the Swift.org open source project

utils/build-script-impl

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #===--- build-script-impl - Implementation details of build-script ---------===#
 #
 ## This source file is part of the Swift.org open source project

utils/darwin-installer-scripts/postinstall

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #===--- postinstall - Creates symlink after installing xctoolchain ----------===#
 #
 ## This source file is part of the Swift.org open source project

utils/omit-needless-words.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 
 # This tool helps assess the impact of automatically applying
 # heuristics that omit 'needless' words from APIs imported from Clang

utils/pygments/swift.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 
 import re
 

utils/recursive-lipo

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 
 import argparse
 import os.path

utils/resolve-crashes.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 
 # A small utility to take the output of a Swift validation test run
 # where some compiler crashers have been fixed, and move them into the

utils/sil-opt-verify-all-modules.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 #===------------------------------------------------------------------------===#
 #
 # This source file is part of the Swift.org open source project