Kang in older minzip for building in CM9 & CM7

CM7 and CM9 do not have libselinux needed in the newer minzip.
diff --git a/gui/Android.mk b/gui/Android.mk
index 18decd0..db7769d 100644
--- a/gui/Android.mk
+++ b/gui/Android.mk
@@ -64,6 +64,9 @@
 ifneq ($(TW_NO_SCREEN_TIMEOUT),)
 	LOCAL_CFLAGS += -DTW_NO_SCREEN_TIMEOUT
 endif
+ifeq ($(HAVE_SELINUX), true)
+LOCAL_CFLAGS += -DHAVE_SELINUX
+endif
 
 LOCAL_C_INCLUDES += bionic external/stlport/stlport $(commands_recovery_local_path)/gui/devices/$(DEVICE_RESOLUTION)