C: More CvXSUBANY heuristics. set POSIX::is any_ptr, skip rest of any_i32

Tie::Hash::NamedCapture stores some pretty high flags, skip em
Fcntl ditto

POSIX needs to set some orig libc pointers.
List::MoreUtils has 2 iterators, natatime_iterator and array_iterator,
which store their CV there.

Most if any_i32 flags are just xsubpp provided XSubAlias indices, already
set in the boot section of the XS. The other integer values ditto.

So we need to special case only some missing any_ptr packages.
DBI, POSIX, List::MoreUtils
C: Another dirty xs_init hack: detect List::MoreUtils

See #364 why this will not work.
First, we need to detect method_named(PV "bootstrap") and all its args.
The 1st arg will be the XS package to boot, the other args must be added to this method.
Currently we are missing both. It only works because the default case is covered, and
we rarelily use development XS versions (n.nn_nn).
C 1.49_06: generalize xs-loading via bootstrap Module

remove the special cases for Moose and List::MoreUtils xs loading,
which is needed if you call  bootstrap Module manually.
actually boot all non-b-c dependent @dl_modules. we assume XSLoader.
C 1.49_07: rework foreign Encode (#365)

need to seperate the Encode::xx package from Encode, and ensure
that the $xsub{} entry is filled, so that we can init2 patch it.

Fixes t/testc.sh 3053