Like GMP, this changes the package build process so the libnettle and
libhogweed are built and linked statically to libgnutls. That makes it
a little simpler to handle FIPS installation, so the users don't need
to install a specific version of the nettle package by themselves, at
the cost of duplicating cryptography implementation provided by
Nettle.
Related: RHEL-50011
Signed-off-by: Daiki Ueno <dueno@redhat.com>