polylines working

put through a bunch of fairly rigorous test cases and it doesn't seem to
fail at all.

also found a bug with closed / open lines causing no verticies to be
saved which I have fixed too.

basically up until this point the algorithm for decoding polylines was
slightly off, also there were a few little mistakes with the coding.
More testing required to 100% verify no issues with polylines and then
code can be optimized.
bringing in serial - very messy
figured out the structure a bt

now passing the form1 object to the other threads for communication and
using invoke.
setting up manual control - halfway through this.
next need to execute a bunch of commands!
deleted everything, uploaded to dropbox instead

making way for new threading etc, want to make everything legit.
new design too.
r
r