Use proper targets for CMake.
Use proper targets for CMake.

Also fix the bug where near lossless was not used
and allow examples to be built by default.

Change-Id: Ieb5ef77fafe83f3776ff4fd27a6d26534c7a51f3

webmproject/libwebp,webmproject/libwebp,webmproject/libwebp,PKRoma/libwebp,webmproject/libwebp,PKRoma/libwebp,PKRoma/libwebp,PKRoma/libwebp,PKRoma/libwebp,webmproject/libwebp,PKRoma/libwebp