[oe] [PATCH 0/4][RFC] Remove CROSS_DIR, install cross-packages into native sysroot

[Khem Raj]

Hi

The following 4 patches are based on  Jushua's work in poky to get rid of
cross dir and install the toolchain in  native sysroot.

I have done native-sdk-builds for uclibc and eglibc. It could build the images
and the images booted fine in qemu on mips and arm.

I would  appreciate if someone could lend a hand in testing these patches

And as we have changed tmpdir layout with this patch I have also bumped ABI
which means tmp has to be nuked before you try these patches.

Please review/ack/nack

Thanks
-Khem