CSV export should have speed values with reasonable precision

[GoogleCodeExporter]

When exporting a track as CSV file, speed values are written as floats with 
many digits after the comma.

For example: "4.776243209838867"

In order to make the files as easy to handle as possible, this should be 
rounded to a reasonable length. One or two digits behind the comma are probably 
OK.

I thing this is worth consideration since people use My Tracks on mobile 
devices with sometimes very limited storage capacity.

Original issue reported on code.google.com by marian.s...@gmail.com on 16 Feb 2011 at 3:53

[GoogleCodeExporter]

The fix is in this clone.  Can someone review?
http://code.google.com/r/sandordornbush-bug2/source/detail?r=28dd347d714571acf6b
96533d0723bf4e94216f5

Original comment by sandordo...@google.com on 18 Feb 2011 at 5:35

• Changed state: Accepted

[GoogleCodeExporter]

Original comment by sandordo...@google.com on 18 Feb 2011 at 6:10

• Changed state: Fixed