[PATCH] perl libs: perl -w + use warnings is redundant

["Ævar Arnfjörð Bjarmason" <avarab@gmail.com>]

Change the Perl scripts to turn on lexical warnings, but only in Perl
scripts that definitely require 5.6.0 or later. I.e. those that either
did 'use warnings' in addition to -w already, or used the three-arg
form of open.

-w sets warnings for all code that interpreter runs. "use warnings" is
lexically scoped. The former is probably not what the authors wanted.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
---
 contrib/examples/git-svnimport.perl         |    2 +-
 contrib/fast-import/import-directories.perl |    3 ++-
 git-add--interactive.perl                   |    3 ++-
 git-archimport.perl                         |    2 +-
 git-send-email.perl                         |    2 +-
 5 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/contrib/examples/git-svnimport.perl b/contrib/examples/git-svnimport.perl
index 4576c4a..ead4c04 100755
--- a/contrib/examples/git-svnimport.perl
+++ b/contrib/examples/git-svnimport.perl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl -w
+#!/usr/bin/perl
 
 # This tool is copyright (c) 2005, Matthias Urlichs.
 # It is released under the Gnu Public License, version 2.
diff --git a/contrib/fast-import/import-directories.perl b/contrib/fast-import/import-directories.perl
index 3a5da4a..7f3afa5 100755
--- a/contrib/fast-import/import-directories.perl
+++ b/contrib/fast-import/import-directories.perl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl -w
+#!/usr/bin/perl
 #
 # Copyright 2008-2009 Peter Krefting <peter@softwolves.pp.se>
 #
@@ -140,6 +140,7 @@ by whitespace or other characters.
 
 # Globals
 use strict;
+use warnings;
 use integer;
 my $crlfmode = 0;
 my @revs;
diff --git a/git-add--interactive.perl b/git-add--interactive.perl
index 21f1330..c2e7ab4 100755
--- a/git-add--interactive.perl
+++ b/git-add--interactive.perl
@@ -1,6 +1,7 @@
-#!/usr/bin/perl -w
+#!/usr/bin/perl
 
 use strict;
+use warnings;
 use Git;
 
 binmode(STDOUT, ":raw");
diff --git a/git-archimport.perl b/git-archimport.perl
index 98f3ede..6ee3fca 100755
--- a/git-archimport.perl
+++ b/git-archimport.perl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl -w
+#!/usr/bin/perl
 #
 # This tool is copyright (c) 2005, Martin Langhoff.
 # It is released under the Gnu Public License, version 2.
diff --git a/git-send-email.perl b/git-send-email.perl
index 111c981..bbb03f7 100755
--- a/git-send-email.perl
+++ b/git-send-email.perl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl -w
+#!/usr/bin/perl
 #
 # Copyright 2002,2005 Greg Kroah-Hartman <greg@kroah.com>
 # Copyright 2005 Ryan Anderson <ryan@michonline.com>
-- 
1.7.1.98.g4a5f