Get rid of OS specific file path separators

as suggested by @linkrope in linkrope#17 (comment).
Not tested yet on Windows as locally not available, currently. Runs wel on Linux.

src/gamma/main.d

@@ -244,16 +244,6 @@ void build(string[] fileNames, string outputDirectory)
         args ~= format!"-of=%s"(fileNames.front.stripExtension.executableName);
     }
 
-    version(Windows) 
-    {
-        import std.string : translate;
-        for(int i; i < args.length; i++) 
-        {
-            dchar[dchar] translation = ['/': '\\'];
-            args[i] = translate(args[i], translation);
-        }
-    }
-
     info!"%s"(args.join(' '));
 
     auto pid = spawnProcess(args);
@@ -269,4 +259,4 @@ string executableName(const string name)
         return name ~ ".exe";
     else
         return name;
-}
+}