[Recovery] Set the build date as 0 so that all zips assert based on build date being greater than N always pass.
diff --git a/products/common.mk b/products/common.mk
index 2b482fc..3131762 100644
--- a/products/common.mk
+++ b/products/common.mk
@@ -17,6 +17,8 @@
     ro.rommanager.developerid=cyanogenmod
 endif
 
+PRODUCT_BUILD_PROP_OVERRIDES += BUILD_UTC_DATE=0
+
 # Used by BusyBox
 KERNEL_MODULES_DIR:=/system/lib/modules