vsftpd: add new package

Hello Eric,

On 20.02.2012 14:51, Eric Bénard wrote:
> - imported 2.0.5 from oe-classic
> - upgrade to 2.3.5 which is latest stable
> - tested on ARMv5 with Angstrom

I created a recipe for vsftpd, too. Here's my version for your
reference. All patches were taken from the Debian or Ubuntu package.

It differs from your recipe in these ways:
- uses openssl
- uses pam if available
- uses xinetd
- allows to set custom default configuration options in bbappends
- only build-tested with OE-core, no runtime tests so far.

Regards,
Andreas

Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>