1) remove setting of SO_DEBUG socket option to make Linux users happy.

2) Make ftp_getrc() more lenient about multiline responses (specifically,
   230 responses which don't have continuation 230- on each line). These
   seem to be all NT FTP servers, and while they may be the mutant spawn of
   the devil, they appear to be legal by RFC 959.
3) Add missing kill_timeout() after transfer to user completes. This coupled
   with 2) is very likely the cause of Rasmus' timeout problem.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@77648 13f79535-47bb-0310-9956-ffa450edef68