Merge changes I4b804906,I7550c3bc,I03dbaeed,Ie136b852,Iab14c0fb, ...
* changes:
Merge remote-tracking branch 'toybox/master' into HEAD
Factor out AF_UNIX socket openting, use FLAG() macros, xsocket() already does CLOEXEC (should fix macos build).
find: support -printf \0 octal escapes and \c.
Add instructions for doing install_flat by hand.
ls: fix -Z, add a test.
DIRTREE_STATLESS doesn't have to test 3 stat fields, it sets a flag
Convenience script to build gcc+musl cross compiler toolchains for various targets using https://github.com/richfelker/musl-cross-make
Update roadmap (what android is using out of pending).
