Rename all methods/properties with protected/private access level in Class NNTP.
Unrename these 2 methods.
Unrename a few more (wrongly renamed).
Remove some scandir's from ProcessAdditional to speed some things up.
Fix mysqldump_tables.php using optimize-keys option for other than Percona Issue #1330
Merge pull request #691 from nZEDb/dev

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