C#: Add csharp-compiler-settings files

csharp/config/tracer/linux/extract-csharp.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+echo extract-csharp.sh: Called with arguments: "$@"
+
+extractor=$SEMMLE_PLATFORM_TOOLS/csharp/Semmle.Extraction.CSharp.Driver
+
+for i in "$@"
+do
+  shift
+  if [[ `basename -- "$i"` =~ csc.exe|mcs.exe|csc.dll ]]
+  then
+    echo extract-csharp.sh: exec $extractor --cil $@
+    exec "$extractor" --cil $@
+  fi
+done
+
+echo extract-csharp.sh: Not a compiler invocation