take2 on checking for rebol binaries

check-rebols.reb

rebol []

platforms: [0.13.2 0.3.1 0.3.40 0.2.40 0.4.4 0.4.40]
windows: [0.3.1 0.3.40]
descriptions: ["" "-debug" "-debug-cpp"]

nl: if system/version = 2.102.0.16.2 [
    info?: :js-head
    func [][replpad-write/html "<hr>"]
] else [func [][print "........................................."]]

base: http://metaeducation.s3.amazonaws.com/travis-builds/

for-each platform platforms [
    extension: if find windows platform [%.exe] else [""]
    dump platform
    for-each description descriptions [
        dump file: unspaced [base platform "/r3" description extension]
        if error? entrap [
            probe info? to-url file
        ][print "missing"]
    ]
    nl
]