[TYPO3-install] Great update 4.6 -> 4.7 ... NOT

[J. Schaller]

I've tried again and now I get a compression error:

Core: Error handler (FE): PHP Warning: gzuncompress() [<a
href='function.gzuncompress'>function.gzuncompress</a>]: data error in
.../typo3_src-4.7.0/t3lib/cache/backend/class.t3lib_cache_backend_dbbackend.php
line 215

Strange, since compression works fine with 4.6.x