Add ByteString.toPercentHexString() method
Remove ByteString.toHexString(char) method

toPercentHexString() generates a hex string with '%' character
before every hex code


git-svn-id: https://svn.forgerock.org/opendj/trunk/opendj@11541 41b1ffd8-f28e-4786-ab96-9950f0a78031
Code cleanup : remove unused constant and method

Remove constant AVA.HEX_STRING_SEPARATOR
Remove method ByteSequenceReader.remainingUpTo()


git-svn-id: https://svn.forgerock.org/opendj/trunk/opendj@11542 41b1ffd8-f28e-4786-ab96-9950f0a78031