Disabling .eh_frame unwind tables

[Valery Ushakov <uwe%stderr.spb.ru@localhost>]

On Thu, Apr 20, 2017 at 19:09:29 +0000, Valeriy E. Ushakov wrote:

> Module Name:	src
> Committed By:	uwe
> Date:		Thu Apr 20 19:09:29 UTC 2017
> 
> Modified Files:
> 	src/sys/arch/macppc/stand: Makefile.inc
> 	src/sys/arch/macppc/stand/bootxx: Makefile
> 	src/sys/arch/macppc/stand/ofwboot: Makefile
> 
> Log Message:
> Quash .eh_frame unwind tables in boot code.
> 
> 
> To generate a diff of this commit:
> cvs rdiff -u -r1.3 -r1.4 src/sys/arch/macppc/stand/Makefile.inc
> cvs rdiff -u -r1.15 -r1.16 src/sys/arch/macppc/stand/bootxx/Makefile
> cvs rdiff -u -r1.57 -r1.58 src/sys/arch/macppc/stand/ofwboot/Makefile

This should probably be generalized and applied consistently to the
whole tree.  E.g. i386 does that but folds it into OPT_SIZE.

Any ideas, comments?

-uwe