lftp 4.1.0 patches in Owl

Hi Alexander,

FYI, we have a couple of upstream-candidate patches in here:

http://cvsweb.openwall.com/cgi/cvsweb.cgi/Owl/packages/lftp/

These are:

lftp-4.0.10-owl-warnings.diff
lftp-4.1.0-owl-sentinel.diff

Both are relevant for 4.1.0.  You could want to review and maybe make
different changes re: the warnings, whereas the sentinel patch is meant
to be acceptable upstream as-is.  It is needed for compiling lftp with
gcc older than 3.5 (we use 3.4.5) and with non-gcc.

Thank you once again for lftp!

Alexander Peslyak <solar at openwall.com>
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