* 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
* Add CallQueue vflib compatibility class
* Use run instead of run_one
* Merge BindableServiceQueue into CallQueue
* Take BEAST_VARIADIC_MAX into account
* Fix license headers as suggested by Vinnie
* Remove obsolete comment
* Add ManualServiceQueue
* Add ManualServiceQueue to beast_vflib include
* Move static unit test variables of header only classes to module cpp
* Remove no longer used mutex member
* _VARIADIC_MAX maxes out at 10
* Correctly apply BEAST_VARIADIC_MAX
* Merge BindableServiceQueue into CallQueue
* New GuiServiceQueue and its JUCE dependency
* Fix leftover merge errors
* Fix CallQueue unit test
* Don't use bassert for better CI support
