Makefile.PL: allow 5.16 and git master, forbid 5.18 not on git master
module updates, no regressions to 1.42
CC simplify entertry op->other->net logic needed <5.11.4. 5.10 still fails
CC import not chain attribute function hooks
CC entertry: enhance debug for next (5.10 problems in Carp::longmess)
CC: more entertry simplifications

jump to other->next past the leavetry op, so ensure that the label is printed
at post pp_leavetry.
CC 2nd my masks earlier $next
CC: skip B::Stackobj B::Bblock on B::CC
pass down CC -D flags to C and warn if unknown (%B::C::debug_map)
implement -c for B::C and B::CC - fixes issue 99
CC: improve initial coretypes stash setup
CC: fix non-numeric stack expressions, like "lnv0 * rnv0"

Fixed conflicts:
	lib/B/Stackobj.pm
	t/testc.sh
CC: increase numeric precision a bit

%g is a very poor choice to keep double precision, as it defaults to 6 digits.
double needs 16-17 digits, 16 usually the best.
Also note that the ops do not use NV as long double, even if d_longdbl is defined.
A NV is double.

%.16g is enough precision to pass the shootout nbody test.

Fixed conflicts:
	lib/B/C.pm
CC: prepare for aelem_nolval and numeric_unop

Not yet enabled
CC: detect "no autovivification" and optimize aelemfast for it

Add blog post updates

Fixed conflicts:
	.gdbinit
	C.xs
	ramblings/blogs-optimizing-3.md
CC: fix wrong Perl_pp_aelem_nolval decl threaded
B::Stackobj 1.10: use ivx, nvx

Prepare to eliminate write_back by using refs to the data

Fixed conflicts:
	lib/B/C.pm
	lib/B/Stackobj.pm
CC: optimize aelem, add -fno-autovivify, add Stackobj::as_obj

On known stack elements aelem can now be as fast as aelemfast.

"no autovivification" loads quite a few modules to your code,
so provide a simplier -fno-autovivify option.

Add as_obj to get the original B obj, for checking stack element flags
beforehand.

Fixed conflicts:
	lib/B/CC.pm
	lib/B/Stackobj.pm
	ramblings/blogs-optimizing-4.md
CC: add -fno-magic, used in aelem only so far

SvRMAGICAL(av) is hard to get for some stack values with aelem. And 99% of the arrays have no magic.
CC: actually honor -fno-taint. -fomit-taint is better written as -fno-taint

Also add more -fno-magic logic