treewide: remove aliases in nixpkgs

This makes the command ‘nix-env -qa -f. --arg config '{skipAliases =
true;}'’ work in Nixpkgs.

Misc...

- qtikz: use libsForQt5.callPackage

  This ensures we get the right poppler.

- rewrites:

  docbook5_xsl -> docbook_xsl_ns
  docbook_xml_xslt -> docbook_xsl

diffpdf: fixup

pkgs/servers/openafs/1.6/module.nix

@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, which, autoconf, automake, flex, yacc
+{ stdenv, fetchurl, which, autoconf, automake, flex, bison
 , kernel, glibc, perl }:
 
 with (import ./srcs.nix { inherit fetchurl; });
@@ -11,7 +11,7 @@ in stdenv.mkDerivation rec {
   name = "openafs-${version}-${kernel.version}";
   inherit version src;
 
-  nativeBuildInputs = [ autoconf automake flex perl yacc which ] ++ kernel.moduleBuildDependencies;
+  nativeBuildInputs = [ autoconf automake flex perl bison which ] ++ kernel.moduleBuildDependencies;
 
   hardeningDisable = [ "pic" ];