Move shebang to top of shell scripts

src/pal/tests/palsuite/runpaltests.sh

@@ -1,7 +1,7 @@
+#!/bin/bash
 #
 # This script executes PAL tests from the specified build location.
 #
-#!/bin/bash
 
 if [ $# -lt 1 -o $# -gt 3 ]
 then

src/pal/tools/gen-buildsys-clang.sh

@@ -1,7 +1,7 @@
+#!/bin/bash
 #
 # This file invokes cmake and generates the build system for gcc.
 #
-#!/bin/bash
 
 if [ $# -lt 1 -o $# -gt 2 ]
 then

src/pal/tools/setup-compiler-clang.sh

@@ -1,8 +1,7 @@
+#!/bin/bash
 #
 # This file sets the environment to be used for building with clang.
 #
 
-#!/bin/bash
-
 export CC=/usr/bin/clang
 export CXX=/usr/bin/clang++