[registry] backout 120c7ea6e1fa: errors should not pass silently Catching ImportError silently while loading files has too many side effects. (e.g. if system hooks / entities can't be registered).

# copyright %(year)s %(author)s, all rights reserved.
# contact %(author-web-site)s -- mailto:%(author-email)s
#
%(long-license)s
"""%(distname)s schema"""