Use perl from PATH, not from absolute shebang (#2304)

bin/hipcc

@@ -1,4 +1,4 @@
-#!/usr/bin/perl -w
+#!/usr/bin/env perl
 # Copyright (c) 2015 - 2021 Advanced Micro Devices, Inc. All rights reserved.
 #
 # Permission is hereby granted, free of charge, to any person obtaining a copy
@@ -21,6 +21,7 @@
 
 # Need perl > 5.10 to use logic-defined or
 use 5.006; use v5.10.1;
+use warnings;
 use File::Basename;
 use File::Temp qw/ :mktemp  /;
 use Cwd;

bin/hipconfig

@@ -1,4 +1,4 @@
-#!/usr/bin/perl -w
+#!/usr/bin/env perl
 # Copyright (c) 2015 - 2021 Advanced Micro Devices, Inc. All rights reserved.
 #
 # Permission is hereby granted, free of charge, to any person obtaining a copy
@@ -21,6 +21,7 @@
 
 # Need perl > 5.10 to use logic-defined or
 use 5.006; use v5.10.1;
+use warnings;
 use Getopt::Long;
 use Cwd;
 

bin/hipify-cmakefile

@@ -1,4 +1,4 @@
-#!/usr/bin/perl  -w
+#!/usr/bin/env perl
 ##
 # Copyright (c) 2015 - 2021 Advanced Micro Devices, Inc. All rights reserved.
 #
@@ -22,6 +22,7 @@
 ##
 #usage hipify-cmakefile [OPTIONS] INPUT_FILE
 use Getopt::Long;
+use warnings;
 
 GetOptions(
     "print-stats" => \$print_stats    # print the command-line, like a header.

bin/hipify-perl

@@ -1,4 +1,4 @@
-#!/usr/bin/perl -w
+#!/usr/bin/env perl
 
 ##
 # Copyright (c) 2015 - 2021 Advanced Micro Devices, Inc. All rights reserved.
@@ -26,6 +26,7 @@
 
 #usage hipify-perl [OPTIONS] INPUT_FILE
 
+use warnings;
 use Getopt::Long;
 my $whitelist = "";
 my $fileName = "";

bin/hipvars.pm

@@ -1,4 +1,4 @@
-#!/usr/bin/perl -w
+#!/usr/bin/env perl
 # Copyright (c) 2020 - 2021 Advanced Micro Devices, Inc. All rights reserved.
 #
 # Permission is hereby granted, free of charge, to any person obtaining a copy
@@ -20,6 +20,7 @@
 # THE SOFTWARE.
 
 package hipvars;
+use warnings;
 use Getopt::Long;
 use Cwd;
 use File::Basename;

tests/hit/parser

@@ -1,4 +1,4 @@
-#!/usr/bin/perl -w
+#!/usr/bin/env perl
 # Copyright (c) 2016 - 2021 Advanced Micro Devices, Inc. All rights reserved.
 #
 # Permission is hereby granted, free of charge, to any person obtaining a copy
@@ -20,6 +20,7 @@
 # THE SOFTWARE.
 
 use 5.006; use v5.10.1;
+use warnings;
 use File::Basename;
 use File::Spec;