Main changes are as the following

 - Allow specifying port in server option, e.g. example.com:1702 (fixes
   github issue #1960 "xl2tpd port change bug").
 - Fixes NULL dereference on connection timeout
 - Update 100-makefile_opt_flags.patch

Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>

Yousong Zhou <yszhou4tech@gmail.com> made a couple of useful fixes
mostly for the xl2tpd-control tool which was broken.
imported them (patches/2*) here.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

Use sources on github and add myself as maintainer.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>