Added missing HttpRequestBase, HttpRequestWrapper and HttpRequest methods + properties:
* HttpRequestBase:GetBufferedInputStream, GetBufferlessInputStream, InsertEntityBody, MapRawImageCoordinates, CurrentExecutionFilePathExtension, TimedOutToken
* HttpRequestWrapper: GetBufferedInputStream, GetBufferlessInputStream, MapRawImageCoordinates, TimedOutToken,
* Fixed MapPath parameter name(overridePath -> virtualPath)
* HttpRequest: GetBufferedInputStream, GetBufferlessInputStream(bool), MapRawImageCoordinates, TimedOutToken