TYPO3 Core

Problem:
The misc/ directory contains obsolete and unmaintained files:
- core_svn_rules.txt - Outdated documentation, it has been merged to typo3.org anyway
- example_MM_relationTables.sql - Arbitrary documentation, current versions located elsewhere
- locallang_XML_dummy.xml - Same as above
- virtualdir.tgz - Outdated dummy package
- superadmin.php - Old and totally unmaintained script to handle multiple TYPO3 instances, paired with t3lib_superadmin
- advanced.htaccess - Default htaccess settings, deployed with dummy and introduction packages

Solution:
- Move advanced.htaccess one folder up and rename to _.htaccess. Build scripts will be adapted by Ernesto to respect this change for 4.5 packages
- Deprecate t3lib_superadmin
- Remove all other files in misc/

Notes:
- svn mv / rm will be used for the files, attached patch contains the deprecationLog() change only.
- This change was already discussed internally, it is done as FYI72 to give others a change to -1 if there are good reasons we might have missed.

(issue imported from #M16840)