largefiles: extract test-lfconvert.t from test-largefiles.t
test-largefiles.t is getting pretty big, and there's lots more to test
in lfconvert. And lfconvert is a fairly orthogonal feature to the
rest of largefiles.
#!/usr/bin/env python
import errno, os, sys
for f in sys.argv[1:]:
try:
print f, '->', os.readlink(f)
except OSError, err:
if err.errno != errno.EINVAL:
raise
print f, 'not a symlink'
sys.exit(0)