Make "retry" a keyword.

Author: Eric Forgy

src/WinRPM.jl

@@ -43,7 +43,7 @@ function __init__()
 end
 
 @unix_only download(source::AbstractString) = (x=HTTPC.get(source); (bytestring(x.body),x.http_code))
-@windows_only function download(source::AbstractString, retry = 5)
+@windows_only function download(source::AbstractString; retry = 5)
     filename = joinpath(dirname(@__FILE__),"..","cache",basename(source))
     for i in 1:retry
         run(BinDeps.download_cmd(source,filename))