[GAP] update to Lego Mindstorms drivers for GAP 2011 release

[Pat Rogers]

We have made available a selected update for the Mindstorms "drivers" 
source files.  It primarily addresses the use of multiple motors as well 
as the use of multiple I2C sensors but contains generally important updates.

The update is in the form of a zip file available for download via GNAT 
Tracker.  The file is named

	"mindstorms-drivers-update-20110801-gpl-2011.zip"

and is a simple collection of source files, without any binaries.

Once logged in to your GNAT Tracker account, follow these steps to 
download the file:

1) Select the "Download" tab to go to that page within GNAT Tracker.
2) Ensure the "LEGO Mindstorms NXT (hosted on Windows)" platform is 
selected in the pull-down.
3) Click on the black triangle next to the "GNAT GPL Ada" tools entry. 
This will expand the entry to show the individual content.
4) Click on the black triangle next to the "Sources" entry to expand 
that entry. You will see a large number of individual files listed with 
check-boxes next to them.
5) Click on the file "mindstorms-drivers-update-20110801-gpl-2011.zip" 
to cause it to begin downloading immediately.  Alternatively, put a 
check-mark next to that file and then press the "Download Selected 
Files" button at the bottom of the page.

One downloaded, open the zip file and view the README inside to see how 
to install the update.