bird reflector: release 20120229

[Alexander V. Chernikov]

Hello list!

Changes:
* Sync code with 1.3.6
* Add 6PE (RFC 4798) support.

Link: http://bird.mpls.in/distfiles/bird/bird-20120229.tar.gz
Documentation: http://bird.mpls.in/projects/mpls-bird/wiki/Bird_rr
Git: http://bird.mpls.in/projects/mpls-bird/repository/show?rev=l3vpn

Setup:
Do configure with --enable-mpls switch

(FreeBSD example)
./configure --prefix=/usr/local --mandir=/usr/local/man 
--infodir=/usr/local/info/ --build=amd64-portbld-freebsd8.2  --enable-mpls

FreeBSD users can edit net/bird-devel port, change its version to 
20120229 and call 'make makesum'

Release is considered as BETA.

Feel free to send questions/suggestions/patches.