added a setting for max outstanding requests, and a limit for BitComet since it's known to have a very low limit, also added an extension header to specify it. Fixed another unnecessary delay spotted by Tianhao Qiu. Cleaned up the logging class a bit. Fixed a bug that would cause an assert when removing a torrent queued for checking.

src/file_win.cpp

@@ -247,6 +247,7 @@ namespace libtorrent
 			{
 				throw_exception("file::seek");
 			}
+			return offs.QuadPart;
 		}
 		
 		size_type tell()
@@ -264,8 +265,8 @@ namespace libtorrent
 				throw_exception("file::tell");
 			}
 
-			size_type pos=offs.QuadPart;
-			assert(pos>=0);
+			size_type pos = offs.QuadPart;
+			assert(pos >= 0);
 			return pos;
 		}
 /*