Using `auto_cache` and `kernel_cache` options doesn't work

[almson]

Geesefs crashes with no seemingly useful logs. Other FUSE options like attr_timeout result in the same. allow_other does seem to work.

[vitalif]

Run it with --debug_s3 --debug_fuse -f, you should see something. In the default mode crashes usually go to syslog I'm not sure if auto_cache and kernel_cache can affect geesefs at all because I explicitly disable kernel caching of file data in the code, because geesefs has its own cache