[technology-pmc] CMake as an exempt pre-req for Mihini

[Benjamin Cabé <bcabe@xxxxxxxxxxxxxxxxxx>]

Dear PMC,

We would like to request your approval to declare CMake an exempt pre-req for the Mihini project.
CMake is a popular build management tool, licensed under the terms of the new BSD license, that simplifies cross-compilation and simplifies the management of several builds inside the same source tree.

Thanks in advance,
Benjamin.