Another merge with master.

Updated Doxygen error numbers yet again, as Python errors got added in the
meanwhile, pushing the Doxygen ones further off.

And re-merged PEP8/whitespace-related conflicts in autodoc_runme.py once again
(if anybody is looking for a motivating example about why significant
whitespace is bad, here is a great use case).

Examples/test-suite/ruby/default_constructor_runme.rb

@@ -143,9 +143,6 @@ end
 # This should work fine
 f = F.new
 
-# This should work fine
-ff = FFF.new
-
 # This should work fine
 g = G.new