* enhancement: sb-ext:save-lisp-and-die on Windows now accepts
:application-type argument, which can be :console or :gui. :gui allows
having GUI applications without an automatically appearing console window.
+ * enhancement: reduced conservativism on GENCGC platforms:
+ conservative roots that point to unboxed pages must be tagged
+ pointers to the start of a valid-looking object, not merely point
+ to within the allocated part of the page, in order to pin the page.
* bug fix: Windows applications without the console window no longer misbehave.
(patch by Wilfredo Velazquez, lp#1256034).
* bug fix: modular arithmetic optimizations do not stumble on dead branches