Refs #8569. [SVN r84463]
[SVN r81819]
Merge Documentation fixes from Trunk. Merge updated makefiles from Trunk. [SVN r78577]
[SVN r76192]
Update icu support code to use the new checking-constructors. Update tests to check the full Unicode character range (as of Unicode V6). Add minimal docs describing the iterators. [SVN r73271]