Unpack keys in __verify_row_key_order_check if possible.

If possible we should unpack keys before logging them in verify_row_key_order_check this would allow for easier diagnosis and debugging of issues when they are encountered. Currently the log message looks something like this:

__verify_row_key_order_check, 259: the 61 and 63 keys on page at [] are incorrectly sorted: \\\\e9&\\\\2a\\\\eb\\\\1e, \\\\e9&\\\\2a\\\\ea\\\\f7

Ideally it would be in the unpacked format and easier to parse, e.g:

 __verify_row_key_order_check, 259: the 61 and 63 keys on page at [] are incorrectly sorted: 10950, 10945