[PATCH] Fix Ada support on GNU/kFreeBSD

[Arnaud Charlet]

> 2009-08-01  Aurelien Jarno  <aurelien@aurel32.net>
> 
> 	* s-osinte-kfreebsd-gnu.ads (SA_ONSTACK): New constant.
> 	(stack_t): New record type.
> 	(sigaltstack): New imported function.
> 	(Alternate_Stack): New imported variable.
> 	(Alternate_Stack_Size): New constant.

This patch is OK.

Arno