* Reduce some duplication
* Prefix skipped steps with "..." per updater convention
* Make PopulateLogUsertext, PopulateLogSearch and PopulateParentId use LoggedUpdateMaintenance -- now they will properly log when there was "Nothing to do" and we can skip the clutter on future update runs
* Docs, etc.
Until now, we relied on setting MW_NO_SETUP which was a) hacky, b) irreversable, and c) likely to be forgotten if you didn't use one of the wrappers like runChild().
Instead, move the freaky magic to doMaintenance and have *it* check if it's in a specific call stack that indicates this is being run from the file scope and should be executed. Rename DO_MAINTENANCE to RUN_MAINTENANCE_IF_MAIN so it's nice and clear what magic happens behind the require_once().
* Docs have been updated to indicate the standard on how to write maintenance scripts (MW.org docs will follow) Have ported vast majority of maintenance scripts to new format. Remaining ones (mostly FiveUpgrade-related) are a bit more tricky. commandLine.inc is untouched for now. Many have gotten code-style updates as well. Deleted .inc files were only used by their .php counterparts, and have been merged into single files.
* (bug 11867) Lock error on redirect table when running orphans.php
* (bug 16322) Allow maintenance scripts to accept DB user/pass over input or params
* (bug 18566) Maintenance script to un/protect pages
* initStats overhaul, now uses class SiteStatsInit. Also fixes bug 18930