Addressed issues from code review - Changed "char" to "gchar".  Changed if statement in dlna_src_use_byte_range().  Added else clause to handle error in dlna_src_handle_query_convert().  Added const qualifier in dlna_src_adjust_http_src_headers() for literal strings.  Also got rid of unnecessary casts on gchar arrays.  Switch to use GST_SECOND instead of numeric value.