Enable LOGTEST constant-folding on ARM.

Return :maybe instead of :direct from
COMBINATION-IMPLEMENTATION-STYLE, similarly to what was done in
f21e0f5b908263715ea0d867edb64ceba5a3d668.
Enable stack-allocatable-closures on ARM.
Implement stack-allocatable-vectors on ARM.
Fix allocation of large objects on ARM.

Yet another immediate encoding issue.
Adjust dynamic-extent.impure tests.

Remove all instance of :fails-on ppc, they have been passing for quite
some time already.

Fix :recheck-nested-dx-bug test on non-x86oids, since they can't
dx-allocate unboxed arrays.
Fix loading constants on ARM some more.

Call LOAD-CONSTANT in CALL* and MOVE-WORD-TO-C, which handles >
12-bit offsets.
Fix load-immediate-word.

It was handling large positive constants properly.
Adjust cost of fast-negate on ARM.

Make the fixnum case cheaper than the signed one.
Fix disassembling LDR/STR with register offsets on ARM.
Annotate DISASSEMBLE output on ARM with static things.

Static functions and static symbols.
tests/debug.impure.lisp: (undefined-function bug-346) works on FreeBSD/x86-64.

  * This was fixed some time ago, it's time that the test suite
acknowledged it.
Fix bug in target Lisp's type-specifier-to-error-number table

It should be insensitive to the host's sxhash
Stop consing SAPs in WITH-ALIEN on non-x86oids.

Non-x86oids were using SETF for setting a variable to the value of
MAKE-LOCAL-ALIEN, which prevented other optimizations.
Remove another :fails-on ppc from dynamic-extent.impure.
Optimize WITH-ALIEN on non-x86oids.

Allocating local aliens involves bumping the number stack, and there's
no need to UNWIND-PROTECT deallocation, since NSP is restored
during unwinds.
Fix fast-ash-c/unsigned/signed VOPs on ARM.

It had a wrong type for the shift, and was missing the signed version,
which uses an arithmetic, not a logical shift.
Implement :multiply-high-vops on ARM.
Implement :symbol-info-vops on ARM.
Merge branch 'master' into database-rewrite
Fixed some issues with the character database.

Most properties now look up properly.

Build broken in PCL.