* gen-aout.c (main): Set DEFAULT_ARCH based on preprocessor macros

	* gen-aout.c (main): Set DEFAULT_ARCH based on preprocessor macros
	(only testing for m68k and vax at the moment); do verify that the
	preprocessor didn't trash the arch name inside the string version.
	Don't print out "pagesize =" line that prevents output from
	compiling.  Derive BYTES_IN_WORD and ARCH values from sizeof
	results.
	* Makefile.in (aout-params.h): Pass gen-aout a dummy target name.