Added makefile for building unit tests for OctetString Value object example.

Added Positive Integer Value and makefile for building unit tests.
Added OctetString Value and Positive Integer Value to unit test make file.
Thank you, Nikola Jelić!

bacnet-stack/demo/object/osv.mak

@@ -0,0 +1,43 @@
+#Makefile to build test case
+CC      = gcc
+SRC_DIR = ../../src
+TEST_DIR = ../../test
+INCLUDES = -I../../include -I$(TEST_DIR) -I.
+DEFINES = -DBIG_ENDIAN=0 -DTEST -DBACAPP_ALL -DBACNET_PROPERTY_LISTS -DTEST_OCTETSTRING_VALUE
+
+CFLAGS  = -Wall $(INCLUDES) $(DEFINES) -g
+
+SRCS = osv.c \
+	$(SRC_DIR)/bacdcode.c \
+	$(SRC_DIR)/bacint.c \
+	$(SRC_DIR)/bacstr.c \
+	$(SRC_DIR)/bacreal.c \
+	$(SRC_DIR)/bacdevobjpropref.c \
+	$(SRC_DIR)/datetime.c \
+	$(SRC_DIR)/proplist.c \
+	$(SRC_DIR)/lighting.c \
+	$(SRC_DIR)/bacapp.c \
+	$(SRC_DIR)/bactext.c \
+	$(SRC_DIR)/indtext.c \
+	$(TEST_DIR)/ctest.c
+
+TARGET = octetstring_value
+
+all: ${TARGET}
+ 
+OBJS = ${SRCS:.c=.o}
+
+${TARGET}: ${OBJS}
+	${CC} -o $@ ${OBJS} 
+
+.c.o:
+	${CC} -c ${CFLAGS} $*.c -o $@
+	
+depend:
+	rm -f .depend
+	${CC} -MM ${CFLAGS} *.c >> .depend
+	
+clean:
+	rm -rf core ${TARGET} $(OBJS)
+
+include: .depend