Load Balancing improvements:
- add new parameter "lb_force_fallback" (default=0)
  Normally, if a reader has fallback and fallback_percaid parameters setted, LoadBalancing chooses it as fallback or as not-fallback reader, after evaluating its stats.
  Setting lb_force_fallback=1 on same reader, with one of above parameters, we force LB to set reader ALWAYS as fallaback, and without consider its stats (ignore fails).
  This could be usefull for secure fallback readers, that we want use as latest secure chance of decoding. It is same behaviour with LB off (mode 0).

- Fix for nfb_readers parameter: now, LB cannot selects more fallback readers than nfb_readers value.
  The fallbacks are choosen with this priority:
  1. readers with fallbacks paramters (fallback or fallback_percaid) and lb_force_fallback=1
  2. readers with fallbacks paramters (fallback or fallback_percaid) and lb_force_fallback=0, if not already used as best readers
  3. readers with best lb_value, if not already used as best readers

git-svn-id: http://streamboard.de.vu/svn/oscam/trunk@9725 4b0bc96b-bc66-0410-9d44-ebda105a78c1
Anticascading over Sid Count (ACoSC) by blacky

global:
[anticasc]
acosc_enabled                 = 0/1
acosc_max_active_sids         = 1-xx  0=unlimited
acosc_zap_limit               = 1-xx 0=unlimited
acosc_penalty                 =  0/1/2/3
acosc_penalty_duration        = sec
acosc_delay                   = msec 

user:
acosc_max_active_sids         = 1-xx  0=unlimited ; -1=global value
acosc_zap_limit               = 1-xx  0=unlimited ; -1=global value
acosc_penalty                 =  0/1/2/3 ; -1= global value
acosc_penalty_duration        = sec ; -1 = global value
acosc_delay                   = msec ; -1 = global value


git-svn-id: http://streamboard.de.vu/svn/oscam/trunk@9726 4b0bc96b-bc66-0410-9d44-ebda105a78c1
revert last unclean commit (sorry)

git-svn-id: http://streamboard.de.vu/svn/oscam/trunk@9727 4b0bc96b-bc66-0410-9d44-ebda105a78c1