merge conflicts

fix a few strcpy issues.
okay millert@, nicm@ ...
(thx others for pointing out stupidity in intermediate patches...)

fix 128-bit division. gcc mangled arguments when passing to the
__udivti3, because MUST_PASS_IN_STACK always returned 1 on amd64;
pr#5780
reported by Simon Kuhnle
tested by Simon Kuhnle, sthen@, bra

fix 128-bit division. gcc mangled arguments when passing to the
__udivti3, because MUST_PASS_IN_STACK always returned 1 on amd64;
pr#5780
reported by Simon Kuhnle
tested by Simon Kuhnle, sthen@, brad@
double-checked & tweak from miod@
ok sthen@, brad@

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Fix infinite loop when passing object with 3+ base classes by value:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18300

Needed by openoffice and boost on amd64

ok espie@ miod@

Introduce a new compiler warning, -Wstack-larger-than-N, to report
functions which are too greedy in stack variables.

This is intended to be used for kernel compiles, where this warning will
be enab

Introduce a new compiler warning, -Wstack-larger-than-N, to report
functions which are too greedy in stack variables.

This is intended to be used for kernel compiles, where this warning will
be enabled for a reasonable size (after a few weeks grace period so that
people can upgrade their compiler).

Please note that this warning relies upon md code, and as such is only
available on platforms OpenBSD runs on; also, the stack size being warned
on is only the local variables size, regardless of the ABI stack usage
requirements and the callee-saved registers; which means a function may
be warning-clean yet need more stack space than meets the eye; the
actual size being checked on may change to include these extras in the
future.

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gcc 3.3.5

Import gcc-3.3.2. Only the compiler. ada frontend removed for space
considerations.