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/streams/FileInputSource.cpp

@@ -43,9 +43,9 @@ InputStream* FileInputSource::createInputStreamFor (const String& relatedItemPat
     return file.getSiblingFile (relatedItemPath).createInputStream();
 }
 
-int64 FileInputSource::hashCode() const
+std::int64_t FileInputSource::hashCode() const
 {
-    int64 h = file.hashCode();
+    std::int64_t h = file.hashCode();
 
     if (useFileTimeInHashGeneration)
         h ^= file.getLastModificationTime().toMilliseconds();
@@ -53,4 +53,4 @@ int64 FileInputSource::hashCode() const
     return h;
 }
 
-}  // namespace beast
+} // beast