busybox: bump version to 1.26.2

busybox: bump version to 1.26.2

And drop patches now upstream.  Also enable internal glob() handling in ash,
as busybox now errors out if this isn't enabled when building for uClibc
because of bugs in the the glob(3) implementation in uClibc and musl since:

commit 3a4cdf45f928de0af09088bbbb96f60d9ac44e87
Author: Denys Vlasenko <vda.linux@googlemail.com>
Date:   Wed Dec 21 04:13:23 2016 +0100

    ash: error out if ASH_INTERNAL_GLOB is not selected on uClibc

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>