treewide: with stdenv.lib; in meta -> with lib;

Part of: https://github.com/NixOS/nixpkgs/issues/108938

meta = with stdenv.lib;

is a widely used pattern. We want to slowly remove
the `stdenv.lib` indirection and encourage people
to use `lib` directly. Thus let’s start with the meta
field.

This used a rewriting script to mostly automatically
replace all occurances of this pattern, and add the
`lib` argument to the package header if it doesn’t
exist yet.

The script in its current form is available at
https://cs.tvl.fyi/depot@2f807d7f141068d2d60676a89213eaa5353ca6e0/-/blob/users/Profpatsch/nixpkgs-rewriter/default.nix

pkgs/tools/misc/rrdtool/default.nix

@@ -1,4 +1,4 @@
-{ fetchurl, stdenv, gettext, perl, pkgconfig, libxml2, pango, cairo, groff
+{ fetchurl, lib, stdenv, gettext, perl, pkgconfig, libxml2, pango, cairo, groff
 , tcl-8_5, darwin }:
 
 stdenv.mkDerivation rec {
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
     mv $out/lib/perl/5* $out/${perl.libPrefix}
   '';
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     homepage = "https://oss.oetiker.ch/rrdtool/";
     description = "High performance logging in Round Robin Databases";
     license = licenses.gpl2;