Some small printout fixes


ndb/include/kernel/signaldata/ScanFrag.hpp:
  Mixed up Hexadecimal and decimal notation, cost me 5 hours of
  debugging to find, grrr..
ndb/src/kernel/blocks/dbtc/Dbtc.hpp:
  Fixed some declaration so that new bigger info fits in variables
ndb/test/ndbapi/testScanPerf.cpp:
  Fix for printing int's instead of Uint64 which for some reason
  caused problems on my Mac.
  Also print performance in each loop.