iOS patch no 1: Select operating system; from StephenBlackheath
iOS patch no 2: remove obsolete CROSS_COMPILE variable; #7699

From StephenBlackheath
Add missing ;; in aclocal.m4
Whitespace only
Remove support for the --enable-hc-boot flag in configure

This porting method has bitrotted; use cross-compilation now
Layout only
Hardcode "BootingFromHc = NO" for now
Finish removing BootingFromHc
Remove utils/Makefile

It required the old build system, so didn't work.
Fix line endings in rts/win32/ThrIOManager.c
Simplify some code; patch from Bill Tutt
Set repositories to have core.autocrlf == false; fixes #7673

Based on a patch from rassilon.
Fix the autocrlf test in sync-all

Apparently git ignores the --git-dir argument.