The programs installed by "examples" USE flag don't really appear to be just examples. There are also general purpose cryptographic tools such as polarssl_sha1sum or polarssl_md5sum. The CMake build system appears to install them unconditionally which makes sense to me. Otherwise we could consider to split them in "examples" and "tools" and move stuff like polarssl_hello to examples.
renamed to "programs" USE flag and thus following upstreams naming ENABLE_PROGRAMS in CMakeLists.txt