Log Message:
Update to 1.20:

libnet 1.20  -- Fri Feb  2 19:42:51 CST 2007

Bug Fixes
  * Fixed incorrect handling of CRLF that straddled two blocks
  * Fix bug in response() which was too liberal in what it thought was a \ 
response line
  * Silence uninitialized value warnings in Net::Cmd during testing on Win32
  * Documentations typos and updates

Enhancements
  * Added support for ORCPT into Net::SMTP
  * Support for servers that expect the USER command in upper or lower case. Try USER
    first then try user if that fails