[fix] Make jemalloc link properly with aml
Using both --with-jemalloc-prefix=jemk_ and --with-install-suffix=-aml ensures that the libjemalloc we build for our internal use has unique functions names and library names. This patch fixes a problem with the libtool configuration, where we had to link a static jemalloc library into the shared aml library to make everything work. Instead, we can now use the proper LIBADD variables with the unique library. Note that with this patch the `make check` target requires a `make install` beforehand.