Release of Alembic 1.0

[Lucas Miller]

Hello, Alembic users, welcome to our first gold release of Alembic.

The complete code changes for this release can be examined here:
http://codereview.appspot.com/4819067/

Some highlights:

- Addition of the Arnold procedural.

- Removal of some things that weren't Alembic related (GLUtil)

- Addition of a python unit test suite for AbcExport and AbcImport.

- Lots of Houdini SOP improvements.

- Cleanup of many compiler warnings.

This initial 1.0 version can now be used for critical, deadline-driven
production work.

Also as usual, feedback and questions are welcome! The main discussion list
is low-traffic, but anyone can sign up and participate:

http://groups.google.com/group/alembic-discussion

-The Alembic Team