Add API call to mount linprocfs in a jail

I need this for the MineOS (Minecraft Server Hosting Panel) plugin I am writing. I hope this can get in by 9.2.1.7 because my plugin is nearly ready.
Add cover page for 9.3.
Modify loader.conf to catch up to FreeBSD 10 changes for displaying logo and brand.

(cherry picked from commit 0bfb06a58e4f0567d0e98b8f49e3c7ebdda062d8)
Match the code.
Migration must not enable LZ4 compression unconditionally.  Without this
the replication would be broken if the remote side was not upgraded.
Revert "Migration must not enable LZ4 compression unconditionally.  Without this"

This reverts commit b79e6ef57b9eb8ff0a1c82cd96b0dbb45f6ddf79.
Correctly change the migration.
Disable this for now until I figure out why it causes problem for
Forth parser.
Auto-Commit of i18n data from Pootle
Merge remote-tracking branch 'github/pr/76'
Fix copyright and version info.
Let's see what a sticky sidebar looks like.
Let's see what the logo and favicon look like.
Include conf.py edits.
Favicon worked, logo did not.
Try manually adding images to _static to bypass sphinx bug 1352.
Hmmm, that bug should be fixed in this version of sphinx. Let's see if quotes fix the warnings.
Let's see if I remember how to resize in gimp.
One more go at the scaled logo.
Remove sphinx from copyright footer.
Let's try the scaled logo from Jenny.