reverting the reorganization done in 3455-3456 in order to make merging my experimental branch to trunk easier.

Preparation for new organization of code in to sub packages. Changed autoload() to work with new structure.

Updated some docs, added identifier quoting to DQL, fixed some test cases, fixed dql select part handling

removing the closing PHP tags form all php files, it\'s not needed and can break sessions which are whitespace sensitive