README fixes

Merge pull request #159 from burnbabyburn/refactor_mergeable Refactor mergeable - removing jessie support

its bin/sh again default hostname is now RaspberryPI removed stretch/buster/jessie checks

remove duplicate code

Readme

Refactor Use RPI_MODEL and SET_ARCH to define all board relevant settings, crosscompilers, architectures etc... - SET_ARCH=32 is default and used for all boards in 32bit mode - SET_ARCH=64 and RPI_MODEL=3 or 3P activate 64bit mode! - no need to set CROSS_COMPILE, KERNEL_IMAGE, RELEASE_ARCH, KERNEL_DEFCONFIG, KERNEL_ARCH, QEMU_BINARY - build kernel is now a default. i kicked out old kernel v3 and jessie support! they're too old. set buster as default - autodetect if program is running on 3142 => assume it is apt-cacher-ng and set APT_PROXY - next pull includes sakaki kernel for RPI3 and RPi3B+ => see https://github.com/sakaki-/bcmrpi3-kernel-bis

always include locales - so many errors connected to locals in the past and a check that always hits => just make it default - UBoot 64bit wanted bc to compile

Merge pull request #5 from drtyhlpr/master pullback

Merge pull request #158 from burnbabyburn/test small videocore fix

add bluetooth firmware and systemd service if console is not enabled, enable bluetooth

small videocore fix - poluting build dir because path was off - added multiple arch support

Merge pull request #4 from drtyhlpr/master update

Merge pull request #157 from burnbabyburn/test Added Raspberry Userland thanks to burn

use variables more often

u-boot 64bit support

this shouldn't be part of this pull req

convert line ending fixing error "\r command not found"

fixes - replaced backticks with $() - enhanced iptables fix - more escape fixes thx to shellcheck.net (no sponsor just a nice page) - if-conditions (!-z equals -n) - if piping find in xargs - use -print0 | -0 (shellcheck.net) - added selecting mmc dev 0 in uboot.mkimg

bugfixes ncurses got renamed in debian 9 corrected "

https://www.shellcheck.net/ - most of the time word splitting fixes escaped with " - NTP var fix (missing $) - !-z equals -n