lftp checks for _Bool with C++ -- what's the proper fix?

[Blair Sadewitz <blair.sadewitz%gmail.com@localhost>]

Hello,

I was preparing an update for lftp to 4.3.8 and encountered a problem:
its configure script now checks for _Bool using C++, which, needless
to say, doesn't go over very well.  It doesn't find it, and so it
tries to do its own thing and the build breaks.

I worked around it by messing around with the configure script, only
to find later that FreeBSD does the same thing.  see:

http://www.freebsd.org/cgi/cvsweb.cgi/ports/ftp/lftp/files/patch-configure?rev=1.4;content-type=text%2Fplain

It would've saved me some time to just have applied that patch. ;-)

Is there a better way to fix this?

Also, what is patch-ab handling?

Regards,

--Blair