[wix-devs] Certain registry keys cause link to fail unless linker is run as administrator (#4753)

[Ron Martin]

@Sean,

I took a look at this issue today and was able to get your test to run 
successfully. The fix, however, begs the question, "What do you want to 
do if a registry key ends in more than one backslash? For the moment, I 
have simply let all but the last pass through to the registry table.

Ron