NPlot Charting Library Code

Update MonoDevelop project files to make latest release happy.

Fixed [SF bug 1590992]

The Axis suggested in a few places wasn't handling properly the case when there is no data available. They now default to the same behavior as the other IAxisSuggester classes.

* [src/AdapterUtils.cs] AxisSuggester_StartStep, AxisSuggester_Auto and AxisSuggester_RowAuto were suggesting wrong axis if there were no data.
* [src/HistogramPlot.cs] SuggestXAxis: If there is no data, you can't use it to adjust the suggested axis.

Signed off by: anmar

Fixed [SF bug 1469760]
A DataSource of one point in a StepPlot was causing a crash.
Now nothing is plotted when plotting one data point because there is now delta between a point and itself. No delta means no steps to plot.

Note: The solution suggested in the bug report is wrong.

Code fixed by: jamcquay
Signed off by: jamcquay

Deleted temporary branch [jamie_private_branch]

Fixed [SF bug 1584460]
When x-axis has a span of 0 units the plot was not being displayed correctly.
This fix assigns a minimum span value in the case where the actual span is 0.

Code fixed by: jamcquay
Signed off by: jamcquay

Fixed [SF bug 1594664]
PointF X and Y values were being cast to an int. Removed the cast

Full patch submitted via email by Pawel Konieczny
Signed off by: jamcquay

Ported the NPlot Demo application to C++.Net

Copied remotely

Small note to Visual Studio 2005 users giving description how to load project/solution file.

Added NAnt build file, MonoDevelop project files and Makefile