Add lsender test programme

Signed-off-by: E. Scott Daniels <daniels@research.att.com>
Change-Id: I92bb7162363033ded245f118d6a3071288f325c4
diff --git a/test/app_test/Makefile b/test/app_test/Makefile
index 67acb9f..35e3542 100644
--- a/test/app_test/Makefile
+++ b/test/app_test/Makefile
@@ -70,6 +70,8 @@
 lcaller: lcaller.c
 	gcc -I $${C_INCLUDE_PATH:-.} $< -g -o $@  -lrmr_nng -lnng -lpthread -lm
 
+lsender: lsender.c
+	gcc -I $${C_INCLUDE_PATH:-.} $< -g -o $@  -lrmr_nng -lnng -lpthread -lm
 
 
 # clean removes intermediates; nuke removes everything that can be built