Add current branch to make dist zip name

Makefile

@@ -1,5 +1,7 @@
 TOPTARGETS := all clean dist
-AMSREV := $(shell git rev-parse --short HEAD)
+AMSBRANCH := $(shell git symbolic-ref --short HEAD)
+AMSREV := $(AMSBRANCH)-$(shell git rev-parse --short HEAD)
+
 ifneq (, $(strip $(shell git status --porcelain 2>/dev/null)))
     AMSREV := $(AMSREV)-dirty
 endif