Added DATE_REV in common makefile rules.

git-svn-id: http://svn.eurecom.fr/openair4G/trunk@4650 818b1a75-f10b-46b9-bf7c-635c3b92a50f

targets/Makerules

@@ -6,6 +6,7 @@ PWD     = $(shell pwd)
 OBJS_DIR := $(PWD)/objs
 
 SVN_REV = $(shell svnversion -n .)
+DATE_REV = $(shell date '+%F %T')
 
 NUM_CORES=$(shell cat /proc/cpuinfo | grep processor | wc -l)