Find encryption info in xref streams when repairing.
Find encryption info in xref streams when repairing.

Ignore-this: 56e7e5613d0d4ad79aea6050dff9330c

darcs-hash:20110106185850-86a4e-20796234d5b852d8592c96176aeae3b48ea62ca6.gz

nqv/mupdf,nqv/mupdf,nqv/mupdf,nqv/mupdf,nqv/mupdf,nqv/mupdf