Hacking on the cmake source tree I came to realize that the per-project setting of cmake executable has moved as a global setting
This was done mostly in commit b9a746480f11b310b0c6e9a3e3d9ab795874b695
I have not been able to find a review for this commit, so I am a little bit unsure about what the intetion acually was, since there still is a cmake executable under the advanced settings.
This patch brings at least part of the functionality back.
This means that one will not be able to choose cmake executable when creating a new project, but it is possible to set it per project under the advanced settings.