AdminImpl.java: inject ignore_case.
LdapImpl.java: check ignore_case in create().
LdapTest.java: update test cases.
AdminImpl.java: fix lookup with ignore_case.
LdapTest.java: fix LDIF, update logic.
SimpleRoleProvider.java: fix warnings.
RoleProvider.java: add ignore_case getter.
Use AtomicBoolean as property type.
Add conditional case setting for tests.
LdapTest: remove PasswordProviders.