treewide: http -> https sources (#42676)

* treewide: http -> https sources

This updates the source urls of all top-level packages from http to
https where possible.

* buildtorrent: fix url and tab -> spaces

pkgs/development/libraries/eigen/2.0.nix

@@ -7,7 +7,7 @@ stdenv.mkDerivation {
   name = "eigen-${v}";
 
   src = fetchurl {
-    url = "http://bitbucket.org/eigen/eigen/get/${v}.tar.bz2";
+    url = "https://bitbucket.org/eigen/eigen/get/${v}.tar.bz2";
     name = "eigen-${v}.tar.bz2";
     sha256 = "0q4ry2pmdb9lvm0g92wi6s6qng3m9q73n5flwbkfcz1nxmbfhmbj";
   };

pkgs/development/libraries/eigen/3.3.nix

@@ -7,7 +7,7 @@ stdenv.mkDerivation {
   name = "eigen-${version}";
   
   src = fetchurl {
-    url = "http://bitbucket.org/eigen/eigen/get/${version}.tar.gz";
+    url = "https://bitbucket.org/eigen/eigen/get/${version}.tar.gz";
     name = "eigen-${version}.tar.gz";
     sha256 = "1q85bgd6hnsgn0kq73wa4jwh4qdwklfg73pgqrz4zmxvzbqyi1j2";
   };

pkgs/development/libraries/eigen/default.nix

@@ -7,7 +7,7 @@ stdenv.mkDerivation {
   name = "eigen-${version}";
 
   src = fetchurl {
-    url = "http://bitbucket.org/eigen/eigen/get/${version}.tar.gz";
+    url = "https://bitbucket.org/eigen/eigen/get/${version}.tar.gz";
     name = "eigen-${version}.tar.gz";
     sha256 = "00l52y7m276gh8wjkqqcxz6x687azrm7a70s3iraxnpy9bxa9y04";
   };