Set version to 0.26.3-rc3
Fix missing return value error check
Set version to 0.26.3
Add is_short_read()
Fix handling of HTTP/S keep-alives (RIPD-556):
* Proper shutdown for ssl and non-ssl connections
* Report session id in history
* Report histogram of requests per session
* Change print name to 'http'
* Split logging into "HTTP" and "HTTP-RPC" partitions
* More logging and refinement of logging severities
* Log the request count when a session is destroyed

Conflicts:
	src/ripple/http/impl/Peer.cpp
	src/ripple/http/impl/Peer.h
	src/ripple/http/impl/ServerImpl.cpp
	src/ripple/module/app/main/Application.cpp
	src/ripple/module/app/main/RPCHTTPServer.cpp
Set version to 0.26.3-sp1
Merge branch 'release' into develop
Cleanup:
* Move QUALITY_ONE to Quality.h
* Move functional files up one level
* Remove core.h
* Merge routines into Config.cpp
* Rename Section to IniFileSections
* Rename IniFileSections routines
Add BasicConfig simplified config interface
Use transform_iterator in http::headers
Add base64 conversions and tests
Fix beast::http::headers move members
Cleanups:
* Remove obsolete string formatting function
* Remove unused ADDRESS macro
* Re-scope functions
Inject JobQueue in NetworkOPs
Set version to 0.26.4-alpha
Refactor STAmount:
* Remove unused functions
* Remove unused constructor
* Use delegating constructors
* Mark some observers deprecated
* Clean up declaration parameter names
* Add checked and unchecked constructors
* De-inline unnecessary inlined functions
* Reorder and regroup members into sections
* Move globals from the unity file to the .cpp
* Change some member functions to be free functions
* Put implementation in one .cpp and the test in another .cpp

Remove unused STAmount constructor and delegate two others No change in functionality.
Add missing includes and tidy up
Clean up and restructure sources
Remove unused macros, config variables, and file
Fix missing includes for boost 1.56.0