Rename BackwardFlow --> Liveness

Changed my mind.

Change-Id: I16cdba8ba20a4dc60db5fbd70e591fb375c48008
diff --git a/vm/Dvm.mk b/vm/Dvm.mk
index dcd70be..621dd02 100644
--- a/vm/Dvm.mk
+++ b/vm/Dvm.mk
@@ -136,10 +136,10 @@
 	alloc/DdmHeap.c \
 	alloc/Verify.c \
 	alloc/Visit.c \
-	analysis/BackwardFlow.c \
 	analysis/CodeVerify.c \
 	analysis/DexPrepare.c \
 	analysis/DexVerify.c \
+	analysis/Liveness.c \
 	analysis/Optimize.c \
 	analysis/RegisterMap.c \
 	analysis/VerifySubs.c \
diff --git a/vm/analysis/CodeVerify.c b/vm/analysis/CodeVerify.c
index 545fa49..288764c 100644
--- a/vm/analysis/CodeVerify.c
+++ b/vm/analysis/CodeVerify.c
@@ -22,7 +22,7 @@
  * some string-peeling and wouldn't need to compute hashes.
  */
 #include "Dalvik.h"
-#include "analysis/BackwardFlow.h"
+#include "analysis/Liveness.h"
 #include "analysis/CodeVerify.h"
 #include "analysis/Optimize.h"
 #include "analysis/RegisterMap.h"
diff --git a/vm/analysis/BackwardFlow.c b/vm/analysis/Liveness.c
similarity index 99%
rename from vm/analysis/BackwardFlow.c
rename to vm/analysis/Liveness.c
index d498410..c6040b5 100644
--- a/vm/analysis/BackwardFlow.c
+++ b/vm/analysis/Liveness.c
@@ -18,7 +18,7 @@
  * Backward analysis for Dalvik bytecode.
  */
 #include "Dalvik.h"
-#include "analysis/BackwardFlow.h"
+#include "analysis/Liveness.h"
 #include "analysis/CodeVerify.h"
 
 static bool processInstruction(VerifierData* vdata, u4 curIdx,
diff --git a/vm/analysis/BackwardFlow.h b/vm/analysis/Liveness.h
similarity index 100%
rename from vm/analysis/BackwardFlow.h
rename to vm/analysis/Liveness.h