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/tools/inputmethods/libkkc/default.nix

@@ -1,7 +1,7 @@
 { stdenv, fetchurl
 , vala, gobjectIntrospection, intltool, python2Packages, glib
 , pkgconfig
-, libgee, json_glib, marisa, libkkc-data
+, libgee, json-glib, marisa, libkkc-data
 }:
 
 stdenv.mkDerivation rec {
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ marisa libkkc-data ];
   enableParallelBuilding = true;
 
-  propagatedBuildInputs = [ libgee json_glib ];
+  propagatedBuildInputs = [ libgee json-glib ];
 
   postInstall = ''
     ln -s ${libkkc-data}/lib/libkkc/models $out/share/libkkc/models