[Octave-cvsupdate] CVS update notice (octave-forge/extra/tsa)

[Alois S. <sch...@us...>]

Update of /cvsroot/octave/octave-forge/extra/tsa
In directory usw-pr-cvs1:/tmp/cvs-serv22750

Modified Files:
	acovf.m 
Log Message:
replace exist('xcorr','file') by exist('xcorr')==2 - reason: higher compatibility