More patches might follow
Update 0(pacth 1):
1.remove unnecessary files
2.reorg doc directory
Update 1(patch 2):
add releasenotes and cleanup the internal-api spec
Update 2(patch 3):
1.added a new releasenote for generic-driver
2.fixed errors in the other four earlier releasenotes
3.add comment in cyborg/object/accelerator.py and deployable.py to
let user better know the meanings of the table entries.
Change-Id: I45a104f9f77a0a163008657c681cf109f941dd11
Signed-off-by: zhipengh <huangzhipeng@huawei.com>