As an alternative to its previously-released "original" BodyGuardz protective body films, NLU Products has just launched BodyGuardz Dry Apply for iPhone 4 ($25), a version that doesn't require liquid during the application process, yet provides the same device coverage at the same price. Inside the package are two complete sets of body film, a device cleaning cloth, and an applicator card that's used to remove air bubbles; NLU twice emphasizes that…