The c2d Spitzer Spectroscopic Survey of Ices around Low-Mass Young Stellar Objects. I. H2O and the 5-8 μm BandsSome of the data presented herein were obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W. M. Keck Foundation. The VLT ISAAC spectra were obtained at the European Southern Observatory, Paranal, Chile, within the observing programs 164.I-0605, 69.C-0441, and 272.C-5008.