A number of x86 registers were removed for #1440, causing a change in
numbering for many other registers. This is causing inconveniences at
the moment, e.g. it's not possible to use the Unicorn2 shared library
as a drop-in replacement for the Unicorn1 one.
Restore the old numbering.
Fixes#1492.
* x86: setup FS & GS base
* Fixed base register writes for x64, removed then for x16/x32 (the don't exist there?)
* FS reg comes before GS so the base regs do so, too
* added shebang to const_generator.py
* Added base regs to and added 'all' support to const_generator
Co-authored-by: naq <aquynh@gmail.com>
