mv lib/oslo to lib/libraries

There is confusion about where installation of new libraries should
end up, to prevent lots of little files being added make a
lib/libraries which is the old lib/oslo. Put compat functions and
includes in place to help with transition.

Change-Id: Ieeab605d187ef6aec571211ab235ea67fa95a607
diff --git a/stack.sh b/stack.sh
index c468595..7034bc4 100755
--- a/stack.sh
+++ b/stack.sh
@@ -592,7 +592,7 @@
 
 # Source project function libraries
 source $TOP_DIR/lib/infra
-source $TOP_DIR/lib/oslo
+source $TOP_DIR/lib/libraries
 source $TOP_DIR/lib/lvm
 source $TOP_DIR/lib/horizon
 source $TOP_DIR/lib/keystone
@@ -822,8 +822,8 @@
 
 echo_summary "Installing OpenStack project source"
 
-# Install Oslo libraries
-install_oslo
+# Install additional libraries
+install_libs
 
 # Install uwsgi
 install_apache_uwsgi