XCode Project does not handle spaces in paths

[oarfish]

When I check out the source to my second hard drive (named Macintosh HD), I cannot compile with XCode. I get errors such as these

…
        export variant=normal
    /bin/sh -c /Users/Rasmus/Library/Developer/Xcode/DerivedData/Transmission-cnqpcruvepjokqeqcpoczdlkyrin/Build/Intermediates/Transmission.build/Debug/miniupnp.build/Script-A2305097100C0293003FDB0C.sh

Detected OS [Darwin] version [14.5.0]
cat: /Volumes/Macintosh: No such file or directory
cat: HD/Users/Rasmus/Downloads/Sources/Transmission/third-party/miniupnp/VERSION: No such file or directory
…

Apparently because somewhere, Variables are not properly quoted. I tried to find the offending substitutions in the target miniupnp, but quoting the $(SRCROOT) var did not help.

I am surprised that this problem exists given that Macintosh HD is (used to?) be the standard name for the primary drive.

[x190]

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[mike.dld]

Fixed in r14701, thanks.