Copy stable/10@r272459 to releng/10.1 as part of
the 10.1-RELEASE process.

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

MFC r266728,266731,266735,266736,268135,268960,269833
Update apr 1.4.8 -> 1.5.1
Update apr-util 1.5.2 -> 1.5.3
Update serf 1.3.4 -> 1.3.7
Update svnlite 1.8.8 -> 1.8.10
Deal with svnlite.1 manpage.

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

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

Make svnlite (actually libapr) work correctly on big-endian arches.
Otherwise, you would get errors similar to:

$ svn co svn://svn.freebsd.org/base/head test
A test/lib
A test/lib/libutil
svn: E200014: Checksum mismatch for
'/home/dim/test/lib/libutil/kinfo_getproc.3':
expected: 0882097a545210d88edff8f63b328602
actual: b378eb08a0f4d4c97c513c4b17207f59

Approved by: re (gjb, marius)

Tweak generated config to make it more likely to work on 32 bit systems.

Pointed out by: Trond.Endrestol@fagskolen.gjovik.no

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.