mention four outstanding issues we should deal with before release

To be addressed before 7.18.2 (planned release: June 2008)

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134 - 

134 - patch for unordered body and header in re-authentication by

      Jari Urpalainen

135 - Busy looping bug in multi_socket interface by

      Christopher Palow

136 - adding easy handles when using curl_multi_socket* by

      Markus Koetter

137 - Working with curl connections as with sockets by

      "tetetest tetetest"

138 -