Fix log path and logging priority for tests database setup
Remove ob_end_clean() sledgehammer

This kills PHPUnit 3.6 and above and I the root cause of the behavior
that it cures was fixed in 4a6b62ce62f0e29ffebfbf00041067456d06ecea.
Fix spelling on installation page forms
Remove duplicate smartoptimizer
Minor tweaks to smartoptimizer
Allow for custom data and temp directories
Relax some of the checks for writable folder and enabled modules
Tweak memcache initialization
Check private modules folder actually exists
Tweak logging initialization
Fix caching
Add support for socket connections to databases
Fix failing tests