[llvm] [llvm][cmake] Print Integrated CRT Alloc (PR #201741)

[Miguel A. Arroyo via llvm-commits]

mayanez wrote:

When dealing with multiple toolchains (e.g. tuned with different allocators for profiling) it makes it easy to determine what it was configured with similar to `+assertions` etc.

https://github.com/llvm/llvm-project/pull/201741