Fix potential nil ptr seg fault and CI test issue

This change corrects two problems that the "dockerless"
CI build process was encountering:
	- Include and link paths set in the CMake config
	  were not always honoured by the application test
	  scripts

	- Building packges to install in the test environment
	  as a non-root user was causing non-standard install
	  prefixes to be added to the packages.

This change also corrects a typo in the NNG module which
potentially could have allowed a nil pointer to be
dereferenced. This bug was discovered while makeing the
changes for the CI jobs.

Issue-ID: RIC-303

Signed-off-by: E. Scott Daniels <daniels@research.att.com>
Change-Id: I30150950dd186e72f8c822ec3fbe5b07369cb4ce
diff --git a/CHANGES_CORE.txt b/CHANGES_CORE.txt
index a118752..4e382e8 100644
--- a/CHANGES_CORE.txt
+++ b/CHANGES_CORE.txt
@@ -5,6 +5,10 @@
 # API and build change  and fix summaries. Doc correctsions
 # and/or changes are not mentioned here; see the commit messages.
 
+2020 April 1; version 3.6.4
+	Correct potential nil pointer use in the NNG interface (RIC-303)
+	Correct issue preventing CI build without a container
+
 2020 March 30; version 3.6.3
 	Correct the max receive message size constant in rmr.h (RIC-301)