- Update _pdfioFileGets to allow for really long lines where it
doesn't matter if we lose the end of the line.
- Update "startxref" detection at the end of the file.
- Refactor repair logic so that you just get a single WARNING about
the repair (debug messages available for testing)
- Allow whitespace after the "obj" in the object header.
- Make sure to close xref stream on error.
- Update predictor code to support Colors <= 32 (some implementations
set Colors to the number of bytes per record in the xref stream,
which prevents the predictor from doing anything...)
- Allow CR CR in xref table.
- Clear old trailer/root/pages/etc. objects when repairing, update
existing objects that were already found in load_xref.
- Don't set current object in pdfioObjectCreate/OpenStream if the
stream can't be created/opened.
