open-vcdiff: add new recipe for version 0.8.3

This is Google's implementation of VCDIFF (RFC 3284) delta compression.
It's more flexible than Xdelta3 (as a developer point of view).

v2 patch:
State of bitbake world, Failed tasks 2014-03-29
reported a do_configure error:

| aclocal: error: non-option arguments are not accepted: '\'.

configure.ac file is quite out of date. Submitted patch upstream:
http://code.google.com/p/open-vcdiff/issues/detail?id=43
Note: autoupdate could be considered later...

Signed-off-by: Matthieu Crapet <Matthieu.Crapet@ingenico.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
zsh: upgrade to 5.0.5

Recipe cleanup:
- Add missing license in meta-oe/licenses
- Add DESCRIPTION
- Use ${BP} and ${SOURCEFORGE_MIRROR}

Signed-off-by: Matthieu Crapet <Matthieu.Crapet@ingenico.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
ipsec-tools: Update patch status

Signed-off-by: Paul Barker <paul@paulbarker.me.uk>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>