Now it’s my turn to help someone 
1- Change GISRC to point to a demolocation that you have on your grasssvn6.4.0. Copy the one that you have at Snapshot (or source code)
2- create a grassrc65 in demolocaion folder with the following:
GISDBASE: /usr/local/grass-6.4.0svn
LOCATION_NAME: demolocation
MAPSET: PERMANENT
3- Compile again and it shoud work
With this the only error, and Don’t know why, I get is:
sh: Can’t open /usr/local/grass-6.4.0svn/tools/g.html2man/g.html2man
What is this?
Regarding this: Why the SVN6.4.0 installer doesn’t copyu this demolocation into the SVN6.4.0 destination?
Kim