Disentangled usage of HLT and offline one pad clusters

Disentangled usage of HLT and offline one pad clusters
 - added extra option the recoparam

Implemted options for rec.C for input switching of TPC reco

//--------------------------------------------------------------------
//          Options for the TPC Reconstruction in rec.C
//
//  4 options can be set to change the input for TPC reconstruction
//  which overwrites the usage of fUseHLTClusters of the AliTPCRecoParam
//
//  1) useRAW        - use RAW, if not present -> do nothing
//  2) useRAWorHLT   - use RAW, if not present -> use HLT clusters
//  3) useHLT        - use HLT clusters, if not present -> do nothing
//  4) useHLTorRAW   - use HLT clusters, if not present -> use RAW
//
//  -> The current default is useHLTorRAW
//--------------------------------------------------------------------