poppler 0.6 Release Candidate 1 released

Today i released poppler 0.5.9 aka 0.6 Release Candidate 1, this is the first time i do a release on the poppler project, so hope i did it right :-D

Changes include:
- Merge xpdf 3.02 changes
- Qt4 frontend is not marked anymore as unstable
- Support for Sound objects
- Support for Opening/Closing page actions
- Support for page duration
- Improve PS Tokenizer performance thanks to Scott Turner
- Various speed ups by Krzysztof Kowalczyk
- Beginning of Interactive Form support by Julien Rebetez
- xpdfrc is no longer used for anything
- Add AbiWord output device and pdftoabw program by Jauco Noordzij
- Fix security issue MOAB-06-01-2007
- Lots of bugs fixed

Testing, patches and bug reports welcome.

We are targetting 27th June for 0.6 release, but that may slip depending on feedback from this release.