IO.popen dosn't support forward slashes in Windows (diffrent behaviour to MRI)

Jruby produces error's When trying to launch a executable that includes forward slashes in the path. This is different behavior than MRI were you both methods work

irb(main):001:0> IO.popen("./temp/test.exe")
=> #<IO:0x1afd9cc>
irb(main):002:0> '.' is not recognized as an internal or external command,
operable program or batch file.

However back slashes work.

irb(main):004:0> IO.popen(".\\temp
test.exe")
=> #<IO:0x145e5a6>