add a -move flag to cr_create_content_file since most common use ofthis command is to take an uploaded file from /tmp and put it intothe cr and for many machines /tmp is the same partition as therepository which means no actual file copying is required.
fix link to PANDA, remove the "This is an early development version of OpenACS 4.x. Production useis NOT recommended." comment since there has been a real release.