Switching MACHINE was causing nativesdk-glibc to rebuild. This was
from the use of OVERRIDES in one of the functions. Exclude OVERRIDES
from the checksum to avoid this.
[patch to oe-selftest to ensure this doesn't regress follows]
(From OE-Core rev: 5e8993632e48e83aa4bab90363506b9d5f7a468f)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
56b2c53ef0