unified interface to unsafe functions; profiling libraries

 SafeHaskell introduced the notion of safe and unsafe modules.
 In order to make as many as possible modules "safe",
 the well-known unsafe functions were moved to distinguished modules.
 This makes it hard to write packages that work
 with both old and new versions of GHC.
 This package provides a single module, System.Unsafe,
 that exports the unsafe functions from the base package.
 It provides them in a style ready for qualification.
 .
 This package provides a library for the Haskell programming language, compiled
 for profiling. See http://www.haskell.org/ for more information on Haskell.