API and build change  and fixe summaries. Doc correctsions
and/or changes are not mentioned here; see the commit messages.

2019 August 6; version 1.0.45 (build changes)
	Support for the Nanomsg transport library has been dropped.
		The library librmr.* will no longer be included in packages.

	Packages will install RMR libraries into the system preferred
		target directory. On some systems this is /usr/local/lib
		and on others it is /usr/local/lib64.  The diretory is
		determined by the sytem on which the package is built and
		NOT by the system installing the package, so it's possible
		that the RMR libraries end up in a strange location if the
		.deb or .rpm file was generated on a Linux flavour that
		has a different preference than the one where the package
		is installed.

2019 August 6; version 1.0.44 (API change)
	Added a new message type constant.

2019 July 15; Version 1.0.39 (bug fix)
	Prevent unnecessary usleep in retry loop.

2019 July 12; Version 1.0.38 (API change)
	Added new message types to RIC_message_types.h.

2019 July 11; Version 1.0.37

	librmr and librmr_nng
		- Add message buffer API function rmr_trace_ref()
		  (see rmr_trace_ref.3 manual page in dev package).