Partial ENSURE compatibility routine for R3-Alpha/Rebol2
Partial ENSURE compatibility routine for R3-Alpha/Rebol2

kealist/ren-c,kealist/ren-c,kealist/ren-c,kealist/ren-c,hostilefork/rebol,rgchris/ren-c,kealist/ren-c,rgchris/ren-c,draegtun/ren-c,hostilefork/rebol,codebybrett/ren-c,hostilefork/rebol,draegtun/ren-c,giuliolunati/ren-c,hostilefork/rebol,draegtun/ren-c,draegtun/ren-c,draegtun/ren-c,codebybrett/ren-c,draegtun/ren-c,kealist/ren-c,rgchris/ren-c,giuliolunati/ren-c,rgchris/ren-c,giuliolunati/ren-c,giuliolunati/ren-c,hostilefork/rebol,rgchris/ren-c,giuliolunati/ren-c,codebybrett/ren-c,codebybrett/ren-c,codebybrett/ren-c,codebybrett/ren-c,hostilefork/rebol