Log Message:
Updated Github third party modules and changed DISTFILES to point to github.com
instead of ftp.NetBSD.org.

* lua-nginx-module 0.9.5 updated to 0.9.16
* echo-nginx-module 0.51 updated to 0.58
* set-misc-nginx-module 0.24 updated to 0.29
* array-var-nginx-module 0.03 updated to 0.04
* encrypted-session-nginx-module 0.03 updated to 0.04
* form-input-nginx-module 0.07 updated to 0.11
* headers-more-nginx-module 0.25 updated to 0.26.1

Only minor revision changes, no features added. Modules don't have Changelog,
git history shows only cosmetic changes and bugfixes.