…to Item14152

* commit '99294e8f73d5c82ccdeb22ca294eb0a63e3450dc':
  Item13897: Fixed use of undefined users attribute

…ion.

It often results in unitialized attributes being accessed.

(cherry picked from commit cbaaf0b)

…to Item14152

* commit 'ed0744222c351c641b466903948ee3a84cde8feb':
  Item13897: Fixed cloning of non-HASH blessed objects.
  Item13897: Don't attempt to finalize login manager in global destruction.
  Item13897: A bit of improvement to stringify()
  Item13897: Overloading of stringification operator by Foswiki::Object.
  Item13897: Completing the previous commit
  Item13897: createNewFoswikiApp() is now initializing cfg using cfgParams

…to Item14237

* commit '6dccd6952e519b8f1a004099542a9a1d7a89b3d3':
  Item13897: Fixed cloning of non-HASH blessed objects.
  Item13897: Don't attempt to finalize login manager in global destruction.

…to Item14237

Class attributes declared using Moo's 'has' are now recorded if
FOSWIKI_ASSERTS environment variable is set to true.

- Added Foswiki::Class::getClassAttributes() and
Foswiki::Object::classAttributes.

…to Item14152

* commit '128af377dc5eb6d4eb4e0b376e156017e2e4490f':
  Item13897: Getting list of class attributes.

…to Item14237

* commit '334de392750e32208371354b15fc981aadc93a6b':
  Item13897: Getting list of class attributes.

'legacy' is for the Foswiki 2.x style .spec format. Currently parsed but
not completely supported. Compatibility is not guarantted though the
parser was trying to resemble the LoadSpec.pm code as much as possible.

'perl' is for perl code format where it'd be possible for spec writer to
write any Perl code which would then be inserted into a sub body and
called. Sub return value is supposed to be a list of spec items.

- Made Foswiki::Config::_getSubHash a public method.