Code cleanup.


ExternalChangeLogTest.java:
Fixed (?) random failures by comparing LDIF values (rightly line ordering insensitive) rather than String values (wrongly line ordering sensitive).
Added checkLDIF() and toLDIFEntries().
In checkValues(), changed assert.

LDAPReplicationDomain.java:
Changed shutdown field from boolean to AtomicBoolean.
Removed shutdown field and initiateShutdown() from RSUpdater.
In buildAndPublishMissingChanges(), removed AtomicBoolean parameter.

HistoricalCsnOrderingTest.java:
Consequence of the change to LDAPReplicationDomain.buildAndPublishMissingChanges().
Reduced visibilities + added final keyword to fields.

DomainFakeCfg.java:
Removed 2 unused ctors, addECLDomainAddListener(), removeECLDomainAddListener(), addECLDomainDeleteListener(), removeECLDomainDeleteListener().

CryptoManagerImpl.java:
Fixed javadocs.
Removed useless StringBuilder uses.