Introduce QInt unit-tests

This suite contains tests to assure that QInt API works as expected.

To execute it you should have check installed and build QEMU with
check support enabled (--enable-check-utests) and then run:

$ ./check-qint

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
diff --git a/Makefile b/Makefile
index 983fe39..d08df6c 100644
--- a/Makefile
+++ b/Makefile
@@ -181,6 +181,8 @@
 qemu-img-cmds.h: $(SRC_PATH)/qemu-img-cmds.hx
 	$(call quiet-command,sh $(SRC_PATH)/hxtool -h < $< > $@,"  GEN   $@")
 
+check-qint: check-qint.o qint.o qemu-malloc.o
+
 clean:
 # avoid old build problems by removing potentially incorrect old files
 	rm -f config.mak config.h op-i386.h opc-i386.h gen-op-i386.h op-arm.h opc-arm.h gen-op-arm.h