Check for a hit in SFX for every library we have enabled

Check for a hit in SFX for every library we have enabled

It's possible that one of the libraries has not yet turned on a given
target in SFX, so we don't want any false negatives. And if a library
hasn't opted into a particular package, they shouldn't be one of the
enabled flags passed to this script.

Also, clean up ISBN marking and access note creation, as we were
modifying the wrong MARC record.

Signed-off-by: Dan Scott <dscott@laurentian.ca>