[CMake] 2.8.11-rc3 generator expression error (was: "Cannot restore timestamp" error on Windows)

[John Drescher]

> The purpose of -rc releases is for people to try them and report back
> any regressions for building their projects.  John, did you report
> this anywhere earlier that we missed?
>

I did not. Sorry. I wanted to try to better track down the cause. I
initially thought it was based on having more than 1 project() but I
believe I also got that after removing all but the main project() in
my application. This happened over the weekend and I had no further
time to test that.

John