DragonFly-supfile change

[Justin C. Sherrill]

Is there any objection to changing the default cvsup file to grab the
checked out version of sources?  I'm working on the Updating portion of the
handbook, and I'm realizing that having to check out the source is an extra
unneeded step for most users.  This also would be 'expected' behavior for
users coming from FreeBSD.

< *default prefix=/home/dcvs
< #*default prefix=/usr
< *default release=cvs
< #*default release=cvs tag=.
---
> #*default prefix=/home/dcvs
> *default prefix=/usr
> #*default release=cvs
> *default release=cvs tag=.