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

modules/beast_core/files/RandomAccessFile.h

@@ -39,14 +39,14 @@ namespace beast
 
     @see FileInputStream, FileOutputStream
 */
-class BEAST_API  RandomAccessFile : public Uncopyable, LeakChecked <RandomAccessFile>
+class  RandomAccessFile : public Uncopyable, LeakChecked <RandomAccessFile>
 {
 public:
     /** The type of an FileOffset.
 
         This can be useful when writing templates.
     */
-    typedef int64 FileOffset;
+    typedef std::int64_t FileOffset;
 
     /** The type of a byte count.
 
@@ -194,7 +194,7 @@ private:
     FileOffset currentPosition;
 };
 
-}  // namespace beast
+} // beast
 
 #endif