REB-LIB: add rebInit()
REB-LIB: add rebInit()

A wrapper for rebStartup, passing in &Host_Lib_Init

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