Trying to recycle some Arrays instead of creating new ones inside ...

... Type1CharString convert. Should prevent some GC.

This is the first one of some array-reset optimizations. I split those in smaller parts, because I don't think all goes well. ;) So it's easier to review the code and apply those patches. (one by one)

See http://stackoverflow.com/a/1234337/1692735 for more details about this optimization.