Add proper headers to class files.
Move the database into specific directory to prepare for multidatabase testing.
re #96

--HG--
rename : test/metadata.db => test/BaseWithSomeBooks/metadata.db
Missing file. re #96
Organize files a little better. re #96

--HG--
rename : test/atom.rng => test/opds-relax-ng/atom.rng
rename : test/opds_catalog_1_1.rng => test/opds-relax-ng/opds_catalog_1_1.rng
Add a basic test for multidatabase. re #96
Merge