Successful build on OS X and linux

- Mono 4.3 was required to work with certain compilation options on the
first pass but this is temporary.
- Support outputting portable pdbs when not running on windows by
default

src/Microsoft.DotNet.Tools.Compiler/Program.cs

@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
+using System.Runtime.InteropServices;
 using Microsoft.Dnx.Runtime.Common.CommandLine;
 using Microsoft.DotNet.Cli.Utils;
 using Microsoft.Extensions.ProjectModel;
@@ -256,9 +257,15 @@ namespace Microsoft.DotNet.Tools.Compiler
                 cscArgs.Add($"-keyFile:\"{compilationOptions.KeyFile}\"");
             }
 
-            // TODO: Support debug portable
-            cscArgs.Add("-debug:full");
-
+            if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
+            {
+                cscArgs.Add("-debug:full");
+            }
+            else
+            {
+                cscArgs.Add("-debug:portable");
+            }
+            
             // TODO: OSS signing
         }
 

src/Microsoft.Extensions.ProjectModel/project.json

@@ -12,7 +12,7 @@
     "System.Runtime.InteropServices.RuntimeInformation": "4.0.0-*",
 
     "NuGet.Packaging": "3.2.0",
-    "System.Security.Cryptography.Algorithms": "4.0.0-*",
+    "System.Security.Cryptography.Algorithms": "4.0.0-beta-23401",
 
     "Microsoft.Extensions.FileSystemGlobbing": "1.0.0-*",
     "Microsoft.Extensions.JsonParser.Sources": {