synchronization with library-service branch + constants are moved from Library to LibraryTree
Merge branch 'master' into android-1.5
introduced BookWithAuthorsTree class
Merge branch 'master' into android-1.5
synchronization with library-service branch
Merge branch 'master' into android-1.5
AuthorListTree
Merge branch 'master' into android-1.5
synchronization with library-service branch
Merge branch 'master' into android-1.5
synchronization with library-service branch
Merge branch 'master' into android-1.5