Fix auth handling during OfferCreate (RIPD-414)
Make bind_handler variadic ctor explicit
Add HTTPHeaders::build_map
Enable asynchronous handling of HTTP-RPC (RIPD-390)
* Activate async code path
* Tidy up HTTP server code
* Use shared_ptr in HTTP server
* Remove check for unspecified IP
* Remove hairtrigger
* Fix missing HTTP authorization check
* Fix multisocket flags in RPC-HTTP server
* Fix authorization failure when no credentials required
* Addresses RIPD-159, RIPD-161, RIPD-390
Set version to 0.26.1
Fix unhandled exception in async HTTP server (RIPD-475)
Add owner_funds to subscription streams (RIPD-377)
Merge branch 'release-next' into release

Conflicts:
	src/ripple/module/app/paths/cursor/ForwardLiquidity.cpp
	src/ripple/overlay/tests/peer_info.test.cpp
	src/ripple/unity/http.h
Set version to 0.26.2
Merge remote-tracking branch 'upstream/release' into tmp
Fix a unit test warning
Set version to 0.26.3-rc2
Squashed 'src/rocksdb2/' content from commit 37c6740

git-subtree-dir: src/rocksdb2
git-subtree-split: 37c6740c383bb9a6ee2747b04f08bc77fcfa10c5
Merge commit '1d38671f5edc2322bc58417816674cc629ae7a70' as 'src/rocksdb2'
Update includes and scons
Remove old rocksdb/
Add enable_if_lvalue
Wrap RippleCalc into a single function (RIPD-500):

* Change public members of Input and Output to remove trailing _.
* Remove Input constructor and separate flags in RippleCalc to reduce
  duplication and confusion.
* Make calculation result private; add getter.
* Narrow scope of some of the results of calls to rippleCalculate.
Bug fixes and new features for LedgerTool:

* Fix RIPD-509, RIPD-514, RIPD-519, RIPD-525, RIPD-527, RIPD-529,
  RIPD-530 and RIPD-531.
* Protect people from ledger-spew and remove cruft.
* Better error messages and handling.
* Cache command lists or clears ledger cache.
* Better ledger summaries.
* Offline mode.
HTTP message and parser improvements:
* streambuf wrapper supports rvalue move
* message class holds a complete HTTP message
* body class holds the HTTP content body
* headers class holds RFC-compliant HTTP headers
* basic_parser provides class interface to joyent's http-parser
* parser class parses into a message object
* Remove unused http get client free function
* unit test for parsing malformed messages