Lpc2000

Hi people

I found a few things that didn't seem to work properly with the Linux 
ISP code by Martin Maurer. I will send him my fixes. If anyone wants
a 
work in progress copy then please contact me directly. I will leave
it 
to him to release an "offical" version.

Problems I found:
* RTS/CTS flow control. I changed this to no flow control for 3-wire 
connections since 3-wire is the most common usage.
* Added a few more traces (cosmetic)
*Synchronisation: The synchonisation sends a stream of question
marks. 
The code only sent one and expected the acknowlegement immediately. I 
found however that you just keep getting the '?' echoed until 
synchronisation was detected and often more than one were needed. I 
fixed the detection and added some retry on synchronisation.

Seems to be working (well on the short hex file I used anyway).

-- Charles