update version to v9u:
For now reverted back to Linux 3.4, since Neobuddy's new usb commits are newer than Linux 3.4.104 and require action per commit, also revert sched: * changes due to missing commits, will update that after
Switch to @neobuddy99 hammerhead optimized toolchain 4.9.3:
https://www.mediafire.com/folder/tkpa3pjrfanp5/Toolchains