OPENDJ-1166 Code cleanup

* src/main/java/org/opends/server/util/BuildVersion.java
** Autorefactor'ed file + Reformat
** Minor code cleanup

* src/main/java/org/opends/server/admin/client/cli/SecureConnectionCliArgs.java
* src/main/java/org/opends/server/util/args/LDAPConnectionArgumentParser.java
** Autorefactor'ed file + Reformat
** Minor code cleanup
** Use straight return
** Use interface instead of concrete class for local variable which are collections

* Chnages done in other files are consequences of cleanup