Code duplicaiton

• Added new class TPCClusterDecompressionCore.inc
• Single entry point for decoding logic
  • decompressTrack() -> logic to decode attached cluster to a specific track
  • decompressTrackStore() -> logic to store clusters, either using vectors or plain arrays
  • decompressHits()
  • decompressHitsStore() -> same as before but for unattached
• The decoding classes include TPCClusterDecompressionCore.inc and uses the functions
• No significant difference for GPU decoding (before duplication and after)
• CPU version appears to be slower, need to check if inline declarations are correct
• Process slowed down by technical problem with no fast math option