[patch] make unix98 usage consistent

[Ben Collins]

This just makes things consistent between the generic sigaction.h and
some of the arch specific ones.

2001-09-22  Ben Collins  <bcollins@debian.org>

	* sparc/bits/sigaction.h: define SA_RESTART and friends when
	_UNIX98_SOURCE is defined too. Matches generic/bits/sigaction.h.
	* ia64/bits/sigaction.h: Likewise.
	* s390/s390-64/bits/sigaction.h: Likewise.


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