Toss out the china and pick up the picnic basket! Summer cookbooks are fanciful creatures — high on whimsy and shamelessly devoted to making a good life better. For some, that means lingering in the farmers markets or gardening with the kids. For others it's indulging in some usually forbidden pleasures — the fried, the icy sweet, the charred and meaty. And for some, it means crossing oceans to sample less familiar fare — without ever leaving the porch. There's something for everyone, but all go just fine with bare toes and a sun hat.