Changing "make" to "gmake" in /usr/pkg/share/octave/3.6.2/m/pkg helpful for pkg install

[David Shao <davshao%gmail.com@localhost>]

On DragonFly 3.1-DEVELOPMENT x86_64 current pkgsrc at least, changing
"make" to "gmake" in /usr/pkg/share/octave/3.6.2/m/pkg line 1382
appears to be helpful for pkg install inside Octave of
miscellaneous-1.1.0.tar.gz from Octave Forge packages
http://octave.sourceforge.net/packages.php

miscellaneous is a dependency of Octave Forge packages such as optim.
pkg install of optim-1.2.0.tar.gz with the change to gmake appeared to
succeed enough to pkg load the optim package and successfully execute
octave:6> vfzero("cos", [0, 2])
ans =  1.5708