General beast update, fixes, optimizations, features:

* Clean ups, optimizations, and new File::commonDocumentsDirectory enum
* Replace sortArray with std::sort for performance
* More error tolerance in XML parser, speedups
* Refactor some byte-order mark detection code
* Add String::appendCharPointer overloads
* More XML parser optimisations and better error detection
* Misc performance tweaks
* Fixes for support of non utf8 strings
* Increased precision when storing strings in XmlElement
* Minor clean-ups
* Minor fix to XmlDocument
* Cleanups to CriticalSection and related synchronization primitives
* Fix DynamicArray unit test

modules/beast_core/streams/beast_InputStream.cpp

@@ -192,7 +192,8 @@ String InputStream::readString()
         }
     }
 
-    return String::fromUTF8 (data, (int) i);
+    return String (CharPointer_UTF8 (data),
+                   CharPointer_UTF8 (data + i));
 }
 
 String InputStream::readNextLine()