Don't include "binary" and "config" from .deps

For some reason, the "binary" (the name of the dmd executable) and "config"
(the path to dmd.conf) lines from the .deps file were included as
dependencies.  This commit makes rdmd ignore these lines.

rdmd.d

@@ -411,7 +411,7 @@ private string[string] getDependencies(string rootModule, string objDir,
     scope(exit) collectException(depsReader.close); // don't care for errors
 
     // Fetch all dependencies and append them to myDeps
-    auto pattern = new RegExp(r"^(import|file|binary|config)\s+([^\(]+)\(?([^\)]*)\)?\s*$");
+    auto pattern = new RegExp(r"^(import|file)\s+([^\(]+)\(?([^\)]*)\)?\s*$");
     foreach (string line; lines(depsReader))
     {
         if (!pattern.test(line)) continue;
@@ -428,10 +428,6 @@ private string[string] getDependencies(string rootModule, string objDir,
             myDeps[pattern[3].strip()] = null;
             break;
 
-        case "binary", "config":
-            myDeps[pattern[2].strip()] = null;
-            break;
-
         default: assert(0);
         }
     }