Update to rpcbind 0.2.2 and port most patches to it.
6 are still missing.

- Split off 0003-systemd-no-dualmode.patch from
0001-systemd-enhancements.patch for easier upstream submission.
- Split off 0004-systemd-sd_notify.patch from
0001-systemd-enhancements.patch for easier upstream submission.
- Rename 0001-systemd-enhancements.patch to 0001-systemd-unit-files.patch

- Update to latest rpcbind 0.2.2 upstream release.
- Following patches are upstream:
- 0001-Fix-building-one-systems-w-out-nss.h.patch
- 0002-Rename-configure.in-to-configure.ac.patch
- 0003-rpcbind-rpcuser-not-being-set-in-Makefile.am.patch
- 0004-Silence-a-warning-about-setgroups-being-implicitly-d.patch
- Adjust following patches:
- 0005-Remove-obsolete-function-in6_fillscopeid.patch
- 0006-In-init_transport-move-creation-of-COTS-sockets-clos.patch
- 0018-configure-check-for-nss.h.patch
- Obsolete patches:
- 0015-When-using-systemd-activation-make-rpcbind-notify-sy.patch
- 0016-Notify-systemd-unconditionally.patch
- 0012-Support-systemd-activation.patch
- 0013-socket-activation-Fix-rpcbind.service-to-use-separat.patch
- 0017-Pull-the-sysconfig-file-into-rpcbind.service-and-use.patch
- 0025-rpcinfo-warmstat_no-warning-about-missing-file.patch
- 0026-systemd-no-default-dep
- 0027-socket-before-service.patch
- 0028-rpcbind-after-var-run.patch
- 0029-rpcbind-sd-notify-stupid-errmsg.patch
- New patches:
- 0001-systemd-enhancements.patch
- 0002-rpcinfo_warmstart-no_warning_about_missing_file.patch