platform specific path.resolve on a different platform fails for relative paths

[misterdjules]

Using path.posix.resolve on Windows with relative paths gives the following output:

C:\Users\jgilli\dev\node>.\Release\node.exe --version
v0.12.1-pre

C:\Users\jgilli\dev\node>.\Release\node.exe
> path.posix.resolve('foo/bar')
'C:\\Users\\jgilli\\dev\\node/foo/bar'
>

Using path.win32.resolve On OSX with relative paths gives:

➜  v0.12 git:(v0.12) ./node --version                       
v0.12.1-pre
➜  v0.12 git:(v0.12) ./node
> path.win32.resolve('foo\\bar');
'\\Users\\JulienGilli\\dev\\node\\v0.12\\foo\\bar'
> 

which at least doesn't mix forward slashes with backslashes, but the drive letter is missing.

I'm not sure what the proper way to fix this would be. I don't know if it even makes sense to be able to call the path.resolve platform-specific function with relative paths when node is running on a different platform, since path.resolve relies on process.cwd.

This discussion had started in a comment for another issue.