bitbake.conf: Default to SRCREV of INVALID

git-svn-id: https://svn.o-hand.com/repos/poky/trunk@4920 311d38ba-8fff-0310-9ca6-ca027cbcb966

meta/conf/bitbake.conf

@@ -482,7 +482,7 @@ UPDATECOMMAND = "ERROR, this must be a BitBake bug"
 UPDATECOMMAND_cvs = "/usr/bin/env cvs -d${CVSROOT} update -d -P ${CVSCOOPTS}"
 UPDATECOMMAND_svn = "/usr/bin/env svn update ${SVNCOOPTS}"
 SRCDATE = "${DATE}"
-SRCREV = "1"
+SRCREV = "INVALID"
 AUTOREV = "${@bb.fetch.get_srcrev(d)}"
 
 SRC_URI = "file://${FILE}"