Updating the CMake generator.

This commit updates the CMake generator for ART so that it can properly
find and invoke the build command (`m`).

(cherry picked from commit bff79014ad3da04d9c298ac8681b25415680fb52)

Test: ./tools/generate_cmake_lists.py --project-name art --arch x86_64-linux_glibc
Change-Id: I448f453ab0f98fb1433aada323a940805c10b972
Merged-In: I448f453ab0f98fb1433aada323a940805c10b972
1 file changed