Add a sanity check to page_rec_is_comp; a new univ.i macro UNIV_RELEASE_NOT_YET_STABLE controls such sanity checks that we will remove after the release is stable enough


innobase/include/page0page.ic:
  Add a sanity check to page_rec_is_comp; a new univ.i macro UNIV_RELEASE_NOT_YET_STABLE controls such sanity checks that we will remove after the release is stable enough
innobase/include/univ.i:
  Add a sanity check to page_rec_is_comp; a new univ.i macro UNIV_RELEASE_NOT_YET_STABLE controls such sanity checks that we will remove after the release is stable enough