[rsbac] FF module

[Jens Kasten]

Hi list,

I have update the shields script for FF module.
Now its configured trough json files in /etc/rsbac/ff.

For example :
http://hg.kasten-edv.de/rsbac-tools/file/99f13df2ca02/cfg/ff/00_general.json

You can create a new config file just like 01_test.json then this will
be loaded as second file.
The key can be free choosen and is then available on commandline. 
Example json:
{
   "test": {
	"help": "test json config file",
	"path": {
	     "/tmp": {
		"testfile.txt": "True"
	}
}
Excecute:
shields --test on -v 

It will on /tmp/testfile.txt if it exist set ff_flag to read-only


Jens