release tarballs should install manpage even without docbook

[Robert Edmonds]

release tarballs currently do not install the nmsgtool(1) manpage if the docbook toolchain (and related dependencies) aren't installed even though they ship with a compiled doc/docbook/nmsgtool.1 file.

possibly commit doc/docbook/nmsgtool.1 (even though it is a generated file) to the repository, so that dist_man_MANS = doc/docbook/nmsgtool.1 can be made into an unconditional rule (and not dependent on BUILD_MAN).

or possibly come up with a workaround in configure.ac / Makefile.am that installs the nmsgtool.1 file if it's present in the source tree.

[reedjc]

Sorry I didn't see this ticket. This was handled in internal issue 12. commit f9f382c was merged to upstream next (which will get here soon).