Better explanation of ftdi_read_data() behaviour

Better explanation of ftdi_read_data() behaviour

On the mailing list, some have come to the conclusion that the 0.17 and 1.0
behaviour of ftdi_read_data() is the most sensible, but needs mor
explanation.

Hopefully the added explanation fullfills this target.
--
Uwe Bonnes                bon@elektron.ikp.physik.tu-darmstadt.de

Institut fuer Kernphysik  Schlossgartenstrasse 9  64289 Darmstadt
--------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------
>From eec274ebd929611180b3524c66ea61025cd391d9 Mon Sep 17 00:00:00 2001
From: Uwe Bonnes <bon@elektron.ikp.physik.tu-darmstadt.de>
Date: Tue, 29 Mar 2011 16:17:43 +0200
Subject: Better explanation of ftdi_read_data() behaviour