Add rpc for list file blocks and add api to download file block int
httpserver
Upload file by blocks
Fix for  rebase
Fix some function and variable name
Improve code
[client] Check cancel when sending block data.
Repo encryption version 2.
Merge branch 'poet' into enc

Conflicts:
	lib/repo.vala
	lib/rpc_table.py
[enc] Improve code and fix some bugs.
[enc] Add repo_id parameter to create_enc_repo RPC.
[enc] Use sha256 as hash function for PBKDF2.
[enc] The IV length of AES 256 should be 16 bytes.
Added upload-blks-aj
[httpserver] Added update-blocks-aj function
[enc] Handle upload of duplicated file name
[httpserver] Clean up upload code and fix memory leaks.
[enc] Fix bug of indexing file on the server.
Merge branch 'enc'

Conflicts:
	common/fs-mgr.c
	daemon/block-tx-client.c
	daemon/clone-mgr.c
	server/block-tx-server.c