* trie: make fullnode children hash calculation concurrently

* trie: thread out only on topmost fullnode

* trie: clean up full node children hash calculation

* trie: minor code fixups

* Disallow --lightserv in light mode

* Reformatted

* cmd/utils: reduce nesting levels a bit

core/state: copy trie too, not just content

swarm/api: bug fix exact match for manifest

accounts/keystore: change modtime for test case files to be bigger than 1sec.

* cmd, consensus, eth: split ethash related config to it own

* eth, consensus: minor polish

* eth, consenus, console: compress pow testing config field to single one

* consensus, eth: document pow mode

internal/ethapi: avoid recreating JavaScript tracer wrappers

* console: fix typo in comment

* contracts/release: fix typo in comment

* core: fix typo in comment

* eth: fix typo in comment

* miner: fix typo in comment

* cmd: fix typo in comment

* cmd/puppeth: tiny comment fixup

cmd/puppeth: new version as presented at devcon3

build: fix typo in comment

les: clean up tx journal file after testing

* eth, internal: Implement  using trie diffs

* eth, internal: Changes in response to review

* eth: More fixes to getModifiedAccountsBy*

* eth: minor polishes on error capitalization

accounts/keystore: Ignore initial trigger of rescan-event

accounts: fix two races in the account manager