Add ibx.0.6.2
Remove unused config files
Remove subtitutions of config files as well
Merge pull request #1337 from olgu/ibx

Add ibx.0.6.2
Merge pull request #1339 from samoht/master

Remove unused config files
+ extlib.1.6.1 extlib-compat.1.6.1

extlib-compat has all modules and is backwards-compatible, extlib is
stripped of conflicting modules, recommended
alternative (extlib | extlib-compat) dependency