Python 3 'surrogateescape' docs: fix div class for Python code
Python unicode_strings test case: restrict to Python > 3.0

Also adjust the test method names and content to match the docs.
unicode_strings test: check return values
unicode_strings_runme.py: fix version check

Python 3.0.1 shouldn't pass.
unicode_strings test: manually check values instead of using assert
Add 3.0.1 release notes summary
R examples building out-of-source

They still don't run though
More diagnostics for csharp_exceptions testcase for diagnosing erratic failures
Merge branch 'hfalcic-master' - Python unicode surrogate escape strings

* hfalcic-master:
  unicode_strings test: manually check values instead of using assert
  unicode_strings_runme.py: fix version check
  unicode_strings test: check return values
  Python unicode_strings test case: restrict to Python > 3.0
  Python 3 'surrogateescape' docs: fix div class for Python code
Whitespace/indentation cleanup of octave.cxx
Whitespace cleanup of Lib/octave/ files