Add CMake files as EXTRA_DIST of autotools.

Makefile.am

 
 EXTRA_DIST=mediastreamer-config.h.in pkg.list autogen.sh mediastreamer.pc.in mediastreamer2.spec.in mediastreamer2.spec
+EXTRA_DIST += CMakeLists.txt \
+FindALSA.cmake \
+cmake/FindArts.cmake \
+cmake/FindBV16.cmake \
+cmake/FindCamApi.cmake \
+cmake/FindFFMpeg.cmake \
+cmake/FindGLX.cmake \
+cmake/FindGSM.cmake \
+cmake/FindOpus.cmake \
+cmake/FindPCAP.cmake \
+cmake/FindPortAudio.cmake \
+cmake/FindPulseAudio.cmake \
+cmake/FindQnxAudioManager.cmake \
+cmake/FindQSA.cmake \
+cmake/FindScreen.cmake \
+cmake/FindSpeex.cmake \
+cmake/FindSRTP.cmake \
+cmake/FindV4L.cmake \
+cmake/FindVPX.cmake \
+cmake/FindX11.cmake \
+cmake/FindXv.cmake \
+cmake/Mediastreamer2Config.cmake.in \
+help/CMakeLists.txt \
+include/CMakeLists.txt \
+mediastreamer-config.h.cmake \
+src/CMakeLists.txt \
+src/generate_descs_header.cmake \
+src/generate_yuv2rgb_header.cmake \
+src/gitversion.cmake \
+tester/CMakeLists.txt \
+tools/CMakeLists.txt
 
 ACLOCAL_AMFLAGS = -I m4 $(ACLOCAL_MACOS_FLAGS)