Update resources description/specification.

The Resource specification for /sys/subparticipants has changed (see diff for
vip_lms.tex in repo and [1],chapter 3.1).
And there is a new resource named /sys/configs (see diff for vip_lms.tex in
repo and [1],chapter 3.2).

[1] http://FreeIT.de/pub/vip_lms26.pdf
Changed Makefile to support mult. PDF versions.

Now "make ftp" copy the current vip_lms.pdf and a versioned vip_lmsxx.pdf file
up to http://FreeIT.de/pub
So now it's possible to view a special versioned PDF file like
http://FreeIT.de/pub/vip_lms26.pdf, which stands for version 2.6