Update dservice to match new version of DiskManager.
Do not call WriteTask & WriteThread in Handler.
Add list device support (and fro).
Update dservice's GL_SN string; add timeout and mkdirs option; add statfs and ofl tools for MetaStoreClient;
Add timeout argument to dservice.
Update scripts to start/stop and fix dservice.
Add timer convert helper tools.
change MD5 compute shell cmd; add fsck for sotstore.
add time range query on statfs.
add statfs_range and select backup node for shared device listing.
add node group setting to modify device.
Scrub the codebase from zhaoyang's branch
Merge Scrubed code base from zhaoyang's branch.
Merge HTTP server from zhaoyang's branch.
Split Makefile to two parts.
merge with master
Change HTTP Server target handling.
init, put, get
fix conflict with master