Add handling for +warp at the command line.

- Command-line console commands are executed before a level is entered, so
  trying to use +warp to position yourself at a specific location will not
  work. We now specially handle this command so that it does work.

src/c_dispatch.cpp

@@ -627,7 +627,14 @@ void C_DoCommand (const char *cmd, int keynum)
 		}
 		else
 		{
-			new DStoredCommand (com, beg);
+			if (len == 4 && strnicmp(beg, "warp", 4) == 0)
+			{
+				StoredWarp = beg;
+			}
+			else
+			{
+				new DStoredCommand (com, beg);
+			}
 		}
 	}
 	else