Fixed failing pbxt test


include/maria.h:
  Added maria_upgrade()
mysql-test/suite/pbxt/r/select.result:
  Don't print number of rows as this is not constant over different runs
mysql-test/suite/pbxt/t/select.test:
  Don't print number of rows as this is not constant over different runs
storage/maria/ha_maria.cc:
  Run maria_upgrade() before maria_init()
storage/maria/ma_init.c:
  Move maria_upgrade() out of maria_init() as in standalone programs maria_data_root is not set.