add baidu pan  for linux

手动 
python setup.py build
python setup.py install
可以用 
但是写成ebuild脚本 有这个提示
open_wr:      /usr/lib64/python3.3/site-packages/bcloud/__init__.py
error: could not create '/usr/lib64/python3.3/site-packages/bcloud/__init__.py': Permission denied
>>> Completed installing bcloud-3.3.7 into /var/tmp/portage/net-misc/bcloud-3.3.7/image/

 * --------------------------- ACCESS VIOLATION SUMMARY ---------------------------
 * LOG FILE: "/var/log/sandbox/sandbox-13222.log"