Bypass true case path for old Node versions

This was added in #2149 but doesn't support Node < 4

lib/extensions.js

@@ -273,6 +273,10 @@ function getBinaryPath() {
     binaryPath = path.join(defaultBinaryPath, getBinaryName().replace(/_(?=binding\.node)/, '/'));
   }
 
+  if (process.versions.modules < 46) {
+    return binaryPath;
+  }
+
   return trueCasePathSync(binaryPath) || binaryPath;
 }