Better diagnostics for SSL certificate failures
Remove obsolete support scripts
Build system improvements:

* Reduce console verbosity.
* Display configured build environment.
* Log build environment and commands in rippled-build.log.
* When compiling under Travis:
  - define TRAVIS_CI_BUILD for C and C++ code.
  - define RIPPLE_MASTER_BUILD for builds made against
    the official Ripple repository.
Fix SConstruct compiler arguments
beast, beast::asio improvements and fixes:
* New maybe_const_t alias for maybe_const
* New asio::enable_wait_for_async for safe cleanup
* New asio::memory_buffer, a managed boost::asio compatible buffer
* shared_handler improvements:
   - Can be 'empty' (no stored handler).
   - Default constructible as 'empty'.
   - Safe evaluation in bool contexts, false==empty
* Fix is_call_possible metafunction:
   - Works on empty argument lists
   - Works with reference types
* Replace SafeBool idiom with C++11 explicit operator bool
* Move IPAddress function definitions to the header
* Move cyclic_iterator to container/
* Remove unused BufferType
* Remove obsolete classes:
   - NamedPipe
   - ReadWriteLock
   - ScopedReadLock
   - ScopedWriteLock
   - LockGuard
Restructure joyent message parser (from Node.js):
* New http::raw_parser wrapper
* Convert parser errors to error_code
* Enumeration and strings for parsed HTTP method
* Move parser engine into joyent namespace
* Rename includes to be distinct
General tidy and refactoring:
* Use nullptr (C++11) instead of NULL.
* Put each file into its own namespace declaration.
* Remove "using namespace" directives and add scope qualifiers.
* Control when beast's implementation of std::equal (C++14) is used.
* Tidy up some const declarations.

Conflicts:
	src/ripple_app/shamap/SHAMapSync.cpp
	src/ripple_app/tx/TransactionEngine.cpp
Change to the treatment of BeastConfig.h
* No longer requires its own compiler include path
* Includes use relative paths to locate the file
* Client applications include the file themselves
* Inclusion of BeastConfig.h can be controlled via preprocessor directive
Add workaround/noexcept.h for visual studio
Add abstract streams module:
* New basic_abstract_ostream template for generic output
* New abstract_ostream, common type alias
* basic_scoped_ostream, RAII output to abstract streams
Fix error code assignment in raw_parser
Fix and add tests for empty_base_optimization.
Update to SQLite 3.8.4.1
beast cleaning and tidying:
* Consolidate small modules into one
* Remove Android-specific platform support
* Remove Chrono.h from beast_core.h
* Removed files:
  - TypeTraits.h
  - Utility.h
  - Net.h
  - Asio.h
* Remove zlib support:
  - Remove inline zlib library sources
  - Remove GZIPCompressorOutputStream
  - Remove GZIPDecompressorInputStream
* Remove obsolete or unused classes:
  - AbstractObject
  - BigInteger
  - BufferedInputStream
  - CacheLine
  - CPUMeter
  - DatagramSocket
  - DynamicObject
  - FileLogger
  - FPUFlags
  - Identifier
  - JSON
  - LocalisedStrings
  - MACAddress
  - MemoryAlignment
  - MemoryInputStream
  - MemoryMappedFile
  - NamedValueSet
  - OptionalScopedPointer
  - PerformanceCounter
  - PropertySet
  - ScopedTimeInterval
  - SparseSet
  - SpinDelay
  - StreamingSocket
  - StringPool
  - SubregionStream
  - Uuid
  - Variant
Add const_container
beast.streams improvements:
* New basic_std_ostream wraps any std::stream.
* New debug_ostream redirects output to debugger if attached.
New unit_test framework:
* Header-only!
* No external dependencies or other beast modules
* Compilation options allow for:
  - Stand-alone application to run a single test suite
  - Stand-alone application to run a set of test suites
  - Global suite of tests inline with the host application
  - Disable test suite generation completely
* Existing tests reworked to use the new classes
Add hardened_hash, prevents adversarial inputs
beast cleanup and tidying:
* Replace custom types with C++11 <cstdint> types
* Fix sqlite integer intos and uses
* Fix String implicit integer constructors
* Escape the enclosing namespace in sqdb
* Replace contract checks with assert
* Make many header files compile independently
* Remove the dependence on beast_core.h in many places
* Remove unused or obsolete classes and functions
* Remove unused or obsolete macros
* Remove unused network functions and files
* Remove unused or obsolete classes:
  - ChildProcess
  - HighResolutionTimer
  - InterProcessLock
  - Throw
  - TrackedMutex
  - UntrackedMutex
  - XmlDocument
  - XmlElement
Example configuration file update:
  - Fix config database default location.
  - Add SSL/TLS for WebSockets config. Currently commented out.