Ilrt.contentmigrator

- Manifest failed to include docs directory

[Ed Crewe]

- Added optional XML format export mode
- Refactored export to use add element function and doc iostream approach
to more easily cater for format variations
- Make sure setText is used with text/html mimetype set

[Ed Crewe]

- Tested against plone 4.0 - fixed tests and added more version compatibility
- Fixed issue with ZMI tabs to use consistent zcml
- Added Google Sites migration utility

[Ed Crewe]

- Move code from svn to mercurial and make public on bitbucket

[Ed Crewe]

- Replace user export page template xml generation with DTML
to be more compatible with old zope
- Fix adding of empty portal.REQUEST attribute causing error with site when
exporting users from plone 2

[Ed Crewe]

- Use indexObject not reindexObject so modified date is preserved
- Document how to change import path

[David Sandy]

- Export any folderish object by default
- Make user export and reindexing optional
- Just log failed object deletions and continue
- Add the os.O_BINARY flag to all file writing to stop line ending tampering on Windows

[Ed Crewe]

- Check for all string types when doing export

[Dominic Hiles]