coodbms release 0.11.2

release 0.11.2:
o Added the necessary hooks to ServerMain, SocketHandler and CoodbmsFactory for extensibility.
o The server now supports RoleML queries and transactions.
o The listBranches utility no longer requires a password.
o New utilities: listDbs, createMasterAccount, createAccount and setPassword.
o New operation, context, returns the current context.
o New Browser client supports the following: help, exit, login, databases, selectDb, branches, selectBranch.