misc fixes in splitpath (take II)

[Dave_Belanger at cimmetry.com]

The previous patch was rejected because the formatting style (indentation &
bracket placement) wasn't consistent with the rest of the file. I reformatted it
but the code hasn't changed.

Dave Belanger
Cimmetry Systems Inc.
dave.belanger at cimmetry.com
(514) 735-3219 (ext. 204)
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(See attached file: patch_splitpath.txt)
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