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/os-specific/linux/rdma-core/default.nix

@@ -1,5 +1,5 @@
 { stdenv, fetchFromGitHub, cmake, pkgconfig, pandoc
-, ethtool, nettools, libnl, libudev, python, perl
+, ethtool, nettools, libnl, udev, python, perl
 } :
 
 let
@@ -16,7 +16,7 @@ in stdenv.mkDerivation {
   };
 
   nativeBuildInputs = [ cmake pkgconfig pandoc ];
-  buildInputs = [ libnl ethtool nettools libudev python perl ];
+  buildInputs = [ libnl ethtool nettools udev python perl ];
 
   cmakeFlags = [
     "-DCMAKE_INSTALL_RUNDIR=/run"
@@ -37,4 +37,3 @@ in stdenv.mkDerivation {
     maintainers = with maintainers; [ markuskowa ];
   };
 }
-