Final changes to build process for prebuilt windows files, documenting user configuration options, enabling clsql-lib load paths and some installation manual edits

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

More documentation edits; performance and feature enhancements for map-index (from-end, collect); fix bug in slot initialization under from-oid

Provide simple restarts for some potentially annoying error conditions.  Especially storing an instance of one store in another database

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.