[Issue 12550] Deprecate -noboundscheck and replace with more useful -boundscheck= option

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=12550

--- Comment #12 from Benjamin Thaut <code at benjamin-thaut.de> ---
Thanks to attribute inference some stuff automatically becomes @safe. Also
phobos and druntime use @safe. I don't want to pay the performance penatly for
those.

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