Improve documentation of permanode in terms

Split the long sentence to make it more immediately obvious that the
permanode is signed by its owner rather than its owner and the search server.

Change-Id: Ia03c3f137cc55f445cfd19713e1421e0035209a2
Merge "Improve documentation of permanode in terms"
serverconfig: only add importer when index available

Change-Id: I1142afd0bfa1cf581641b4cd4dac1c9e76e6671a
Merge "serverconfig: only add importer when index available"
diskpacked: use indexKV constant in reindex.go

Change-Id: I2e9253920567e97906b2020c3a4886d8673ec0e0
Merge "diskpacked: use indexKV constant in reindex.go"
pkg/osutil: add FreeBSD CPU usage.

Change-Id: Ic2cf8f8e422d2aef8c7c5e217da988d14735a416
Merge "pkg/osutil: add FreeBSD CPU usage."
lock: Merge added FreeBSD support from upstream.

Change-Id: I2cb6de1fe32069a675eed405744d632054d67a11
Merge "lock: Merge added FreeBSD support from upstream."
Rename android.go files to androidx.go

Go 1.4 (Go tip currently) defines a new GOOS=android, and a GOOS.go file is ignored on
other operating systems. But these android.go aren't actually meant to be only run on
GOOS=android, since we just build Linux binaries on Android for now.