Don't use dummy.c for glibc sanity check in chap 5
grub: update description for grub-glue-efi
python: supress "failed to check new pip version" or "a new pip version is available" warnings
parition: mention EFI system partition
Remove all non header files in linux headers
groff: remove -j1
gcc-pass2: remove unnecessary --enable-initfini-array option