Support CGI scripts which output HTTP headers with only with LF
Support CGI scripts which output HTTP headers with only with LF

According to the RFC, only CRLF is a correct line ending.
However, it seems there are still flawed CGI programs returning only LF
instead of CRLF (see #768).

Make CivetWeb tolarant  fault-tolerant and recognises a lone LF
as a separator too.

GerHobbelt/civet-webserver,GerHobbelt/civet-webserver,GerHobbelt/civet-webserver,GerHobbelt/civet-webserver,GerHobbelt/civet-webserver,GerHobbelt/civet-webserver