running scripts within the current c-shell

[Marvin Bellamy]

I'd asked a question about doing this a while back, but never got a 
response (assuming no one knew how). Say, for instance, you'd like to 
run a script to set up your java environment.  If you just run a script, 
you lose your variable settings after the script dies.  To run a script 
"within" your current login shell:

bin/csh:  source yourscript.csh