Remove undocumented magic features for IIS.

Undocumented, untested features break very easily. It is best to not
have them where possible.
Fix incorrect autolinking when urls end at HTML tags.

Fixes #3879
assert proper array access for _dateTimeSelected()
CakeSession improvements
Merge pull request #1361 from dereuromark/master-form-helper-datetime

assert proper array access for _dateTimeSelected()
Merge pull request #1362 from dereuromark/master-cake-session

cake session clarification
Fix to the date input year field

Create the field if no value is informed only to the maxYear and not to
the current date.
Cleanup from previous commit.

Refs #GH-1352
Merge branch 'luksm-master'

Closes #GH-1352
Sync to orignal reppo

Merge from cakephp/cakephp