Fix: Out of tree build fails in libconfig

libconfig_la_CPPFLAGS should also include the top-level AM_CPPFLAGS.

Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Signed-off-by: David Goulet <dgoulet@efficios.com>
Fix: Don't include the binary in the live test's EXTRA_DIST

Adding the binary in EXTRA_DIST causes the "dist" target to fail
with a "No rule to make target libtap.la" error.

Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Fix: add missing source file for make dist

Signed-off-by: David Goulet <dgoulet@efficios.com>
Fix: session.xsd is already present in dist_xml_DATA

There is no need to include session.xsd as part of xml_DATA since
dist_xml_DATA will already ensure it is part of the dist target and
installed.

Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Signed-off-by: David Goulet <dgoulet@efficios.com>