distro/redhat: Update to F24 and fix few issues, add nhrpd.service

* redhat/quagga.spec.in: Review Fedora spec file and sync up with any
  useful differences, inc:
 - Add tmpfiles.d/quagga.conf config for Quagga from Fedora
 - Add quagga-filter-perl-requires.sh from Fedora.
 - Move libs to %{_libdir}/quagga as per Fedora
 - use systemd_postun_with_restart for postun
 Add nhrpd.service systemd file.  Simplify/chop down the RPM description.
* Makefile.am: Update to match
diff --git a/redhat/quagga-tmpfs.conf b/redhat/quagga-tmpfs.conf
new file mode 100644
index 0000000..8974b64
--- /dev/null
+++ b/redhat/quagga-tmpfs.conf
@@ -0,0 +1 @@
+d	/var/run/quagga	0755 quagga quagga