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

beast/asio/impl/IPAddressConversion.cpp

@@ -33,7 +33,7 @@ Endpoint from_asio (boost::asio::ip::address const& address)
     }
 
     // VFALCO TODO IPv6 support
-    bassertfalse;
+    assert(false);
     return Endpoint();
 }
 
@@ -52,7 +52,7 @@ boost::asio::ip::address to_asio_address (Endpoint const& endpoint)
     }
 
     // VFALCO TODO IPv6 support
-    bassertfalse;
+    assert(false);
     return boost::asio::ip::address (
         boost::asio::ip::address_v6 ());
 }