[M3commit] CVS Update: cm3

[Jay Krell]

CVSROOT:	/usr/cvs
Changes by:	jkrell at birch.	08/02/10 05:37:04

Modified files:
	cm3/m3-libs/m3core/src/unix/cygwin/: Usignal.i3.c 

Log message:
	make it not optional