Added getter for the trigger classes mask. Protection in all the getters in case of AliRawReaderFile or AliRawReaderMemory in which the raw-data header does not exist and one can't get an access to the event id and trigger info.
Added getter for the trigger classes mask. Protection in all the getters in case of AliRawReaderFile or AliRawReaderMemory in which the raw-data header does not exist and one can't get an access to the event id and trigger info.


shahor02/AliRoot,alisw/AliRoot,miranov25/AliRoot,jgrosseo/AliRoot,mkrzewic/AliRoot,mkrzewic/AliRoot,coppedis/AliRoot,miranov25/AliRoot,ecalvovi/AliRoot,alisw/AliRoot,coppedis/AliRoot,sebaleh/AliRoot,jgrosseo/AliRoot,shahor02/AliRoot,mkrzewic/AliRoot,sebaleh/AliRoot,ALICEHLT/AliRoot,ALICEHLT/AliRoot,alisw/AliRoot,ALICEHLT/AliRoot,coppedis/AliRoot,jgrosseo/AliRoot,shahor02/AliRoot,sebaleh/AliRoot,miranov25/AliRoot,shahor02/AliRoot,alisw/AliRoot,mkrzewic/AliRoot,ALICEHLT/AliRoot,ecalvovi/AliRoot,shahor02/AliRoot,ecalvovi/AliRoot,miranov25/AliRoot,shahor02/AliRoot,jgrosseo/AliRoot,mkrzewic/AliRoot,ALICEHLT/AliRoot,mkrzewic/AliRoot,jgrosseo/AliRoot,ecalvovi/AliRoot,shahor02/AliRoot,ecalvovi/AliRoot,sebaleh/AliRoot,coppedis/AliRoot,sebaleh/AliRoot,ALICEHLT/AliRoot,alisw/AliRoot,sebaleh/AliRoot,miranov25/AliRoot,miranov25/AliRoot,coppedis/AliRoot,ecalvovi/AliRoot,coppedis/AliRoot,coppedis/AliRoot,sebaleh/AliRoot,miranov25/AliRoot,miranov25/AliRoot,mkrzewic/AliRoot,ecalvovi/AliRoot,coppedis/AliRoot,alisw/AliRoot,alisw/AliRoot,jgrosseo/AliRoot,jgrosseo/AliRoot,ALICEHLT/AliRoot,alisw/AliRoot