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/system/fcron/default.nix

@@ -1,7 +1,7 @@
 # restart using 'killall -TERM fcron; fcron -b
 # use convert-fcrontab to update fcrontab files
 
-{ stdenv, fetchurl, perl, busybox, vim }:
+{ lib, stdenv, fetchurl, perl, busybox, vim }:
 
 stdenv.mkDerivation rec {
   pname = "fcron";
@@ -52,7 +52,7 @@ stdenv.mkDerivation rec {
     find -type f | xargs sed -i -e 's@^\(\s\)*chown@\1:@' -e 's@^\(\s\)*chgrp@\1:@'
   '';
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     description="A command scheduler with extended capabilities over cron and anacron";
     homepage = "http://fcron.free.fr";
     license = licenses.gpl2;