- Made the SOCKS code use the new Curl_read_plain() function to fix the bug

Markus Moeller reported: http://curl.haxx.se/mail/archive-2008-09/0016.html

- recv() errors other than those equal to EAGAIN now cause proper
  CURLE_RECV_ERROR to get returned. This made test case 160 fail so I've now
  disabled it until we can figure out another way to exercise that logic.

RELEASE-NOTES

@@ -23,6 +23,8 @@ This release includes the following bugfixes:
  o HTTP pipelining over proxy
  o fix regression in configure script which affected OpenSSL builds on MSYS
  o GnuTLS-based multi interface doing HTTPS over proxy failed
+ o recv() failures cause CURLE_RECV_ERROR
+ o SFTP over SOCKS crash fixed
 
 This release includes the following known bugs:
 
@@ -37,6 +39,6 @@ advice from friends like these:
 
  Keith Mok, Yang Tse, Daniel Fandrich, Guenter Knauf, Dmitriy Sergeyev,
  Linus Nielsen Feltzing, Martin Drasar, Stefan Krause, Dmitry Kurochkin,
- Mike Revi, Andres Garcia, Michael Goffioul
+ Mike Revi, Andres Garcia, Michael Goffioul, Markus Moeller
 
         Thanks! (and sorry if I forgot to mention someone)