Add some missing CMake files to the distribution.

Ping-Bug: 10331
Change-Id: I67ca59bb77766f4625e64b9042cdcb5d03cd7994
Reviewed-on: https://code.wireshark.org/review/3281
Reviewed-by: Guy Harris <guy@alum.mit.edu>
(cherry picked from commit 5dd83af26d2a035bbe94fd453d2093e8504f2685)
Reviewed-on: https://code.wireshark.org/review/3314
Reviewed-by: Jeff Morriss <jeff.morriss.ws@gmail.com>