+Daniel Stenberg (29 Apr 2010)
+- Ben Greear made telnet a lot better/easier to use by an application:
+
+ The main change is to allow input from user-specified methods, when they are
+ specified with CURLOPT_READFUNCTION. All calls to fflush(stdout) in
+ telnet.c were removed, which makes using 'curl telnet://foo.com' painful
+ since prompts and other data are not always returned to the user promptly.
+ Use 'curl --no-buffer telnet://foo.com' instead. In general, the user
+ should have their CURLOPT_WRITEFUNCTION do a fflush for interactive use.
+
+ Also fix assumption that reading from stdin never returns < 0.
+ Old code could crash in that case.
+
+ Call progress functions in telnet main loop.
+