[COMMITTED] Fix bootstrap on powerpc-darwin

[Andrew Pinski <pinskia at physics dot uc dot edu>]

At first I thought this was just a missing dependancies as I was 
building at -j3
but then I looked at regression tester and I noticed that it failed the 
same way.

Anyways the problem is that diagnostic.h uses N_OPTS from options.h but 
does not
include it.  Now config/rs6000/host-darwin.c comes along and includes 
diagnostic.h
but not options.h so we get an error saying N_OPTS is not defined.  So 
instead of
just fixing config/rs6000/host-darwin.c, I decided to fix diagnostic.h 
to include
options.h and update the dependancies.  Oh, I did notice that 
host-ppc-darwin.o
did not include the correct dependancies for diagnostic.h anyways so I 
fixed that
to use the macro.

Committed as obvious after a quick build.

Thanks,
Andrew Pinski

ChangeLog:

	* diagnostic.h: Include options.h.
	* config/rs6000/x-darwin (host-ppc-darwin.o): Correct the
	dependancies for diagnostic.h.
	* Makefile.in (DIAGNOSTIC_H): Add options.h

Attachment: fixdarwin.diff.txt
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