Increase the default limit to 5000 files for targets with at
least 8 MiB of RAM (the vast majority). The upper limit of the
setting is now 40,000 or 100,000 if you have at least 8 MiB or
16 MiB of RAM, respectively.
Update the manual to mention that this setting can also impact
the database browser. "Using the Database" already mentions it,
but it's useful to say so in the setting's description.
Change-Id: I6f204eec6cf2ccaea2af81d2fa287f92476eed4a