This is basically a sed job, in preparation of the next commit. The rules are more or less: - s"NIX_(.._WRAPPER_)?([a-zA-Z0-9@]*)"NIX_\1@infixSalt@_\2"g - except for non-cc-wrapper-specific vars like `NIX_DEBUG`
In many cases, this involved taking @orivej's and @edolstra's recent ld-wrapper improvements, and applying then elsewhere.
also makes cc-wrapper compatible with clang in the darwin fork.