Cleaning up root directory files; map-index performance enhancement, index api cleanup, ensure transaction fix, alpha quality documentation draft

Check for cross-store loading errors in multi-store operation; more documentation; backend language to data store language

Added support for complex serialization (no sorting), latest doc changes and a preliminary GC wrapper

Significant documentation string and documentation edits towards 0.6.1 manual.  Clean up packages so elephant exports user visible symbols and backend exports backend-relevant symbols.  Change required fix in serializer packages also.  Added :elephant-user package.

Migrate no longer has any dependency on memory size; improved migrate tests; cleaned up duplicate detection

Added support for maintaining oid-to-oid map in an external database; cleaned up tests and do-migration-tests to allow validation

Added functionality and test for migrating persistent references inside lisp aggregates: array, list and hash tables

Fixes for Win32 allegro build; lispwork builds but fails to run; new test of :index class keyword which fails

Fix to map-index test; a tweaked version of Robert's symbol/pakage conversion diff and misc changes to serializer

Export btree utilities; implement efficient map operators, reimplement get-instance methods; add test of map-index; better declarations