Modification of data structure, reading and writing

M: .commons.HcbData.java modified data structure of entities
A: .domains.*, .domains.impl.* add entities to fulfill the data
structure above
A: .data.impl.BookDataRW & MemberDataRW & UserDataRW add reading and
writing methods for the entities
Rename: .utils.DataUtils -> .utils.DataUtilsBasic deprecated some
methods which may never be used in the future
A: .utils.testcases.IntegratingTestData intergrating test of data
writing and reading
A: /data/* data file pattern are like that ^_^

Signed-off-by: lrcry <lrcry@vip.qq.com>