Fix #66 - Binary package refactoring

Changed encodeXXAtEnd to encodeXXTo, as it's what's actually done. Moved all accesses to UnsafeMemory.Copy to binary.Util. Removed the decoding methods from ByteArrayBuffer as they are never used. Uniformized the code to prepare for the removal of EncodedOutput.
Merge pull request #83 from LBliss/issue/66

Fix for issue #66