Compared SPX series from Tickwrite to SP500 from CRSP.

SPX tickwrite (autoroll, mostactive, noadj):
OUTPUT_CONTRACT=-1
SESSIONS=DAY
COLLECTION_TYPE=COLLECTION_TYPE.FUTURES
EXTRACT_TYPE=COLLECTOR_SUBTYPE_FUT_TRADES
REQUESTED_DATA=78|SP[20130316]
START_DATE=12/31/1992
END_DATE=03/16/2013
COMPRESSION_TYPE=ZIP
DESTINATION_DIRECTORY=C\:\\Users\\ok1011\\Documents
INCLUDE_HEADER_ROW=true
DATE_FORMAT=yyMMdd
TIME_FORMAT=HHmmssSSS
ROLL_METHOD=AUTO_ROLL

Signed-off-by: Oleg Komarov <o.komarov11@imperial.ac.uk>