scripts/config: sync with linux upstream Signed-off-by: Felix Fietkau <nbd@openwrt.org> SVN-Revision: 43873
build: add new menuconfig code based on linux 3.9 SVN-Revision: 36361
don't generate .tmpconfig.h and .kconfig.d SVN-Revision: 5071
finally move buildroot-ng to trunk SVN-Revision: 5059