dev-lang/nqp: Use official releases instead of github tarballs

dev-lang/nqp: Use official releases instead of github tarballs

The existing SRC_URI's used githubs /tarball/ API, which is now
obsoleted by the /archive/ API.

Additionally, Upstream provide official release archives in
/releases/

Both of these endpoints obsolete the use of the vcs-snapshot eclass.

However, both of these endpoints return different archives, with
different checksums, so cache-avoidance must be done for the
checksums to give correct results for all users.

Package-Manager: Portage-2.3.66, Repoman-2.3.16
Signed-off-by: Kent Fredric <kentnl@gentoo.org>