MFC r304747:

Update from sqlite3-3.12.1 (3120100) to sqlite3-3.14.1 (3140100).

This commit addresses the tmpdir selection vulnerability fixed in
sqlite3-1.13.0. See VuXML entry 546deeea-3fc6-11e6-a671-60a44ce6887b.

This MFC was suggested by kib@ in the abandoned D7651.

Security: VuXML 546deeea-3fc6-11e6-a671-60a44ce6887b
Security: CVE-2016-6153

MFC: r269851,r272076,r274884,r282328,r285644,r286503,r286504,r286505,
r286506,r286510,r286561,r286562,r287034

Update svnlite from 1.8.10 to 1.8.14, and the support components:
serf->1.3.8, apr->1.5.2, apr-util->1.5.4, sqlite3->3.8.11.1

This includes syncing the developer templates with head.

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Introduce svnlite so that we can check out our source code again.

This is actually a fully functional build except:
* All internal shared libraries are static linked to make sure there
is no interference with ports (and to reduce build time).
* It does not have the python/perl/etc plugin or API support.
* By default, it installs as "svnlite" rather than "svn".
* If WITH_SVN added in make.conf, you get "svn".
* If WITHOUT_SVNLITE is in make.conf, this is completely disabled.

To be absolutely clear, this is not intended for any use other than
checking out freebsd source and committing, like we once did with cvs.

It should be usable for small scale local repositories that don't
need the python/perl plugin architecture.

Import sqlite-3071700