s390.md (UNSPEC_ROUND, [...]): New constants.

s390.md (UNSPEC_ROUND, [...]): New constants.

	* config/s390/s390.md (UNSPEC_ROUND, UNSPEC_SETHIGH,
	UNSPECV_BLOCKAGE): New constants.
	("*sethighqisi", "*sethighhisi", "*sethiqidi_64", "*sethiqidi_31",
	"*extractqi", "*extracthi", "*extendqidi2" splitter, "*extendqisi2"
	splitter, "fix_truncdfdi2_ieee", "fix_truncdfsi2_ieee",
	"fix_truncsfdi2", "fix_truncsfsi2", "blockage"): Use them.

	(all insns and expanders): Write output control string as brace block
	where appropriate.  Remove \-escapes for doublequote characters.

From-SVN: r69978