0.8.12.40:

0.8.12.40:
	Fix SB-GROVEL to make less catastrophic types

	Thanks to Christophe for most (in fact, all except 2) of these
	fixes.

	* Make sb-grovel's compile failures a bit clearer: There are now
	  separate conditions for c-compile-failed, a-dot-out-failed, and
	  the normal lisp compile/load failures.
	* don't use gensym for structure member names; This confused the
	  environment horribly.
	* make identity-1 a macro so that its uses get optimized away.
	  As a result,
	* sb-bsd-sockets::make-host-ent doesn't throw a compiler optimization
	  note on run time any more.
	* sb-grovel doesn't lie about vector types on array structure fields'
	  SETF accessor any more. As a result, no more type error warnings on
	  constants.lisp-temp compilation any more!
	* sb-bsd-sockets' getprotobyname alien function accepts a
	  (* protoent) structure now.
	* export error-component and error-operation from asdf.lisp