Added StringBuilder to UCPM
exposed characterMethods to public
Updated UCPM Sample

Has more examples, especially of new method calls
Resolves kjlubick/fb-contrib/issues/24

For the record, lines 48 and 49 have been commented out since August
2008, the initial commit of this file.  I've put them back in and things
seem to work alright.

Line 55 (startsWith) has been commented out nearly as long.  As it turns
out, startsWith doesn't have a char equivalent, no point in keeping dead
code.

I've added support for replace and refactored a bit.
Merge branch 'AIOB-fix'