Adding 'export' option to subversion module (to export instead of checkout)
Adding example for svn export
Update CHANGELOG.md

Correct module name in changelog
Documentation/examples updates for new 1.6 accelerate options

Fixes #6692
Fix for unicode environment variable handling

Fixes #5395
Merge branch 'subversion_export' of https://github.com/maniaplanet/ansible into maniaplanet-subversion_export
Adding in a test for subversion export option