As previously mentioned on the mailing list I think this is a useful feature for testing. It also means you can screw up any configs and databases in the new "alternative" firmware directory without killing your stable working setup.
Currently you have to manually faff around with the fullzip file as it contains the same hard-coded path. I'll look into it next time. Questions/Comments/Criticisms? -- Alex, homepage: http://www.bennee.com/~alex/
0001-Make-.rockbox-a-configurable-path.patch
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