generic: Add support for 2.6.39

Add support for 2.6.39 based on rc3. Runtime tested on bcm63xx.

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@26615 3c298f89-4303-0410-b956-a3cf2f4a3e73

target/linux/generic/patches-2.6.39/001-fix_localversion.patch

@@ -0,0 +1,11 @@
+--- a/scripts/setlocalversion
++++ b/scripts/setlocalversion
+@@ -168,7 +168,7 @@ else
+ 	# annotated or signed tagged state (as git describe only
+ 	# looks at signed or annotated tags - git tag -a/-s) and
+ 	# LOCALVERSION= is not specified
+-	if test "${LOCALVERSION+set}" != "set"; then
++	if test "${CONFIG_LOCALVERSION+set}" != "set"; then
+ 		scm=$(scm_version --short)
+ 		res="$res${scm:++}"
+ 	fi