getArgs path transformation is broken on Windows

It looks like System.Environment.getArgs is trying to be smart on Windows and to transform arguments drive paths to environment-local paths (e.g., 'C:/' => 'C:\msys64', but it messes up the mangling somewhere if the path is not at the beginning of the argument:

$ args "C:/" ["C:/"]

$ /tmp/args " C:/" [" C;C:\\msys64"]

Note the leading "C;" which makes no sense.

$ uname -s MINGW64_NT-6.3

Trac metadata

Trac field	Value
Version	7.9
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	libraries/base
Test case
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CC	ekmett, hvr
Operating system
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