C#: Add framework coverage report

csharp/documentation/library-coverage/coverage.csv

@@ -0,0 +1,2 @@
+package,sink,source,summary,sink:html,source:local,summary:taint
+System,4,3,6,4,3,6

csharp/documentation/library-coverage/coverage.rst

@@ -0,0 +1,12 @@
+C# framework & library support
+================================
+
+.. csv-table::
+   :header-rows: 1
+   :class: fullWidthTable
+   :widths: auto
+
+   Framework / library,Package,Remote flow sources,Taint & value steps,Sinks (total),`CWE-079` :sub:`Cross-site scripting`
+   System,"``System.*``, ``System``",,6,4,4
+   Totals,,,6,4,4
+

misc/scripts/library-coverage/generate-report.py

@@ -234,7 +234,8 @@ for lang in settings.languages:
         row[1] = ", ".join("``{0}``".format(p.name)
                            for p in sorted(other_packages, key=lambda x: x.name))
 
-        csvwriter.writerow(row)
+        if any(other_packages):
+            csvwriter.writerow(row)
 
         # Collect statistics on all packages
         row = [row_prefix + "Totals", None]