tools: Debian requires installed perl scripts to shbang perl directly, from Paul Gevers

tools/delete_non_svn_files.pl

@@ -1,4 +1,4 @@
-#!/usr/bin/env perl
+#!/usr/bin/perl
 #
 # *****************************************************************************
 # *                                                                           *

tools/install/replace_in_files.pl

@@ -1,4 +1,4 @@
-#!/usr/bin/env perl
+#!/usr/bin/perl
 #
 # Copyright 2004 Mattias Gaertner
 #