[C] Raise CMake requirement to 3.6.1.
[C] Raise CMake requirement to 3.6.1.

EvilMcJerkface/Aeron,EvilMcJerkface/Aeron,EvilMcJerkface/Aeron,mikeb01/Aeron,mikeb01/Aeron,EvilMcJerkface/Aeron,mikeb01/Aeron,mikeb01/Aeron