Fix breakage caused by the recent upgrade of graphics/libtiff -- HylaFax's
configure is unusually picky about tiff version.
While at it, change the (invalid) `-disable-PAM' to `-disable-pam' and
stop requiring particular version of -ljpeg and -ltiff -- anything already
installed will do.
Kris notified the maintainer and myself (the last committer in this port)
yesterday, but the maintainer did not respond yet. Since the port remains
broken, I claim the "timeout" very early.
Notified by: kris