* Default buildhistory directory to buildhistory/ under the current
directory and require an option to set it
* Show a description in the help output
(From OE-Core rev: 64aa7d0b53f6ad45ab1a2121e917d7a512097407)
Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>