Code cleanup.

ReplicationCliMain.java:
Inlined local variables
Drastically simplified the code of some promptIfRequired() methods.
Extracted methods getPurgeErrorMsg(), getInitialLdapContext(MonoServerReplicationUserData), getPrompt(), getPrePostErrorMsg(), getInitializeAllErrorMsg().
In loadADSAndAcceptCertificates(), used AtomicReference instead of an array with a single argument.
Inverted some equals.