started work on a gdb plugin for moar-related datastructures
process_worklist() only needs to enforce the GC invariant if the object moved.

The comment notes "In moving an object to generation 2"... but the code had
been doing the work for *all* objects in generation 2, not just those moved
there. We know whether we have just moved an object from the nursery to gen2,
so track that, and only walk the recently marked items for a newly moved
object.
In P6opaque's compose(), zero the freshly allocated repr_data->unbox_slots.

Not all the slots are used, but serialize_repr_data() will serialise all of
them, and hence write out garbage to disk. This doesn't cause crashes, because
the unuused slots are never accessed, but it does conceal other problems.
valgrind reports an awful lot of warnings, concealing real problems, and the
generated bytecode files will not be byte-for-byte identical, preventing easy
consistency checking.
Make nqp::can have null check like nqp::findmethod
Bring lookup semantics in line with other backends
.gitignore release tarballs
Merge remote-tracking branch 'origin/master' into gdb-support
skeleton parts for call profiling
Clear fd when closing a file handle to prevent "dangling" descriptors

We can run into a situation with MoarVM where a double close can
close an arbitrary, innocent file.  Consider:

  my $fh := nqp::open($filename); # let's say it's FD 3
  # do stuff
  nqp::close($fh);
  my $other_fh := nqp::open($other_filename); # 3 again!
  nqp::close($fh); # closes 3! o_O
find_lex_by_name can return NULL, check for it
more toward callsite IDs
Merge pull request #73 from hoelzro/master

Clear fd when closing a file handle to prevent "dangling" descriptors
Merge branch 'master' of github.com:MoarVM/MoarVM
Add unsinged native int array support.

Fixes some of the encode tests in Rakudo.
Simplify and fix UTF-16 encoding.

We'll need some work if we want to support BE and LE forms of UTF-16
on platforms where it differs from what is native. But the existing
code didn't handle doing this either, initial appearances aside. This
gets the UTF-16 encoding tests on Rakudo passing, so it's at least
correcter than what it replaced.
first attempt at garbage collector instrumentation
implement openpipe, hoelzro++
Add a missing write barrier in OS settypecache.

If the result of MVM_repr_at_pos_o() is in the nursery, then a write
barrier is needed to ensure that the STable whose cache is being set
becomes correctly marked as a nursery root, and hence Object addresses
in the cache get updated.
Missing write barrier in setwho.
Missing write barrier in setboolspec.