Created new development branch from Jython.

Will try to get regression tests going, then cut over to main branch.
Added scraping code for stillhq
Simple read test
Added fixes from trunk
Migrated fix from trunk r123
Merged Attila's pdfreader fixes from the broken_pdf branch
Merged the rest of Attila's changes except one that cause problems (EOF as a token)
Handle empty PDF objects (bug from biohazard.pdf in rst2pdf)
Ignore objects with a zero file offset in the xref
Use a warning if object not found
Accept but warn about \r only after stream keyword
Allow garbage after EOF, and fix bug related to hex string against dict end with no spaces
Added line numbers to exception printing
Reuse PdfTokens instance for all outer container parsing for a single file
Added infrastructure for building new tokenizer
Fix StopIteration in tokenizer comparison code
Push test for bad tokens up to scanner client
Saving work in progress on new tokenizer
Fixed a couple of bugs in new tokenizer
Fixed a couple more bugs and added more debug prints to new tokenizer.