OpenMP requires signed integer index
Merge remote-tracking branch 'upstream/master' into POLDI
Fixes wrong counting direction in for-loop in PoldiAutoCorrelationCore
Fixes validation error of POLDI_Parameters_2013.xml
Merge pull request #15 from mkoennecke/bugfix/poldi-AutoCorrelationCore

Bugfix/poldi auto correlation core
Merge branch 'feature/poldi_fixes'