ensure access to the XPCOM modules with the global property

* additionally, remove the prefix |window.| of |Services| and |Cc,Ci,Cu|. I
  added it for explicit showing of their scope, but generally they are in the
  global scope and it's enough to describ alone
create a module importer for reliable presence of module
create a working list to avoid overwriting the constant values
make a simple test

* it seems to be checked enough
  https://developer.mozilla.org/en-US/docs/Components.utils.getWeakReference