[M3commit] CVS Update: cm3

[Jay Krell]

CVSROOT:	/usr/cvs
Changes by:	jkrell at birch.	12/09/20 15:21:21

Modified files:
	cm3/m3-sys/m3back/src/: M3C.m3 

Log message:
	add m3_sign_extend_T(INT64) helper