[Octave-cvsupdate] CVS update notice (octave-forge/main/plot)

[Paul K. <pki...@us...>]

Update of /cvsroot/octave/octave-forge/main/plot
In directory usw-pr-cvs1:/tmp/cvs-serv16185/main/plot

Modified Files:
	Makefile 
Log Message:
Makefiles more consistent; accept optional "install" target in tertiary makes