* curl: build with OpenSSL (https) support by default.

* Some fetchurl-related refactoring.  The `realCurl' attribute is
  gone, `curl' is the real thing.  To prevent an infinite recursion in
  `fetchurl' (because it depends on curl and building curl needs
  fetchurl), curl and its dependencies (openssl, zlib, perl) use
  `fetchurlBoot', which is the fetchurl used by the previous bootstrap
  phase (e.g. the statically linked version of curl for
  stdenv-linux).  So as a result you can use https:// urls almost
  everywhere.

  There's also some hackery to prevent a different curl from being
  built in every stdenv-linux bootstrap phase (namely the
  stdenv.fetchurl attribute which allows fetchurl to be overriden
  everywhere).

svn path=/nixpkgs/trunk/; revision=11905

pkgs/stdenv/linux/make-bootstrap-tools.nix

@@ -28,7 +28,7 @@ let
 
     inherit (pkgsDiet)
       coreutils diffutils gnugrep
-      gzip bzip2 gnumake bash patch binutils;
+      gzip bzip2 gnumake bash patch binutils curl;
 
     findutils = pkgsDiet.findutils4227; # 4.2.28 is broken
       
@@ -58,8 +58,6 @@ let
       profiledCompiler = true;
     };
   
-    curl = pkgsDiet.realCurl;
-
     glibc = pkgs.glibc;
 
     # The result should not contain any references (store paths) so