Add Project/Configuration/Option/OutDir since VS and Mono seem to have

different destination directory rules.
Pass all set Option parameters through to the csproj.

Prebuild/src/Core/Nodes/OptionsNode.cs

@@ -297,6 +297,24 @@ namespace Prebuild.Core.Nodes
 			}
 		}
         
+		[OptionNode("OutDir")]
+		private string m_OutDir = "bin/";
+
+		/// <summary>
+		/// 
+		/// </summary>
+		public string OutDir
+		{
+			get
+			{
+				return m_OutDir;
+			}
+			set
+			{
+				m_OutDir = value;
+			}
+		}
+
 		[OptionNode("OutputPath")]
 		private string m_OutputPath = "bin/";
 
@@ -673,6 +691,14 @@ namespace Prebuild.Core.Nodes
 			return m_FieldsDefined.Contains("m_" + name);
         }
 
+		// Return the names of all the fields that have had a value set
+		public IEnumerable<string> AllDefined()
+        {
+			foreach (string name in m_FieldsDefined) {
+				yield return name.Substring(2);
+            }
+		}
+
 		/// <summary>
 		/// Copies to.
 		/// </summary>

Prebuild/src/Core/Targets/VSGenericTarget.cs

@@ -592,14 +592,10 @@ namespace Prebuild.Core.Targets
 					if (conf.Name == "unknown")
                     {
                         ps.WriteLine("  <PropertyGroup>");
-                        string[] optionNames = new string[] { "OutputPath", "OutputType", "RootNamespace" };
-                        foreach (var opt in optionNames)
+						foreach (string opt in conf.Options.AllDefined())
                         {
-                            if (conf.Options.IsDefined(opt))
-                            {
-                                ps.WriteLine("    <{0}>{1}</{0}>", opt,
-                                             Helper.EndPath(Helper.NormalizePath(conf.Options[opt].ToString())));
-                            }
+                            ps.WriteLine("    <{0}>{1}</{0}>", opt,
+                                 Helper.EndPath(Helper.NormalizePath(conf.Options[opt].ToString())));
                         }
                         ps.WriteLine("  </PropertyGroup>");
                         ps.WriteLine();