mdb_v8: update to latest version

 * ::jsstack -v prints function defintion
 * ::jsprint works with objects with only numeric properties
 * update tests to use builtin mdb_v8
 * add more symbols to postmortem script - pending upstream
   inclusion
2014.03.11, Version 0.11.12 (Unstable)

* uv: Upgrade to v0.11.22 (Timothy J Fontaine)

* buffer: allow toString to accept Infinity for end (Brian White)

* child_process: add spawnSync/execSync (Bert Belder, Timothy J Fontaine)

* cluster: handle bind errors on Windows (Alexis Campailla)

* contextify: handle infinite recursion errors (Fedor Indutny)

* crypto: allow custom generator for DiffieHellman (Brian White)

* crypto: allow setting add'l authenticated data (Brian White)

* crypto: fix CipherFinal return value check (Brian White)

* crypto: make NewSessionDoneCb public (Fedor Indutny)

* dgram: pass the bytes sent to the send callback (Timothy J Fontaine)

* dns: validate arguments in resolver (Kenan Sulayman)

* dns: verify argument is valid function in resolve (Kenan Sulayman)

* http: avoid duplicate keys in writeHead (David Björklund)

* net: add localPort to connect options (Timothy J Fontaine)

* node: do not print SyntaxError hints to stderr (Fedor Indutny)

* node: invoke `beforeExit` again if loop was active (Fedor Indutny)

* node: make AsyncListenerInst field more explicit (Trevor Norris)

* os: networkInterfaces include scopeid for ipv6 (Xidorn Quan)

* process: allow changing `exitCode` in `on('exit')` (Fedor Indutny)

* readline: fix `line` event, if input emit 'end' (Yazhong Liu)

* src: add tracing.v8.on('gc') statistics hooks (Ben Noordhuis)

* src: add v8.getHeapStatistics() function (Ben Noordhuis)

* src: emit 'beforeExit' event on process object (Ben Noordhuis)

* src: move AsyncListener from process to tracing (Trevor Norris)

* tls: fix crash in SNICallback (Fedor Indutny)

* tls: introduce asynchronous `newSession` (Fedor Indutny)

* util: show meaningful values for boxed primitives (Nathan Rajlich)

* vm: don't copy Proxy object from parent context (Ben Noordhuis)

* windows: make stdout/sterr pipes blocking (Alexis Campailla)

* zlib: add sync versions for convenience methods (Nikolai Vavilov)
src: accommodate uv_cwd including null on win32
Merge branch 'v0.11.12-release'
Now working on 0.11.13
readline: consider newlines for cursor position

Fixes #7266.
Closes #7279.
deps: update v8 to 3.24.40
src: update to v8 3.24 APIs
deps: backport a6fed7c5 from v8's trunk
deps: allow allocations in gc epilogue/prologue

See https://codereview.chromium.org/177243012/
node: fix exported signatures of MakeCallback

fix #7302
src, test: fix up ObjectWrap, `make test-addons`

V8 was upgraded from 3.22 to 3.24 in commit 1c7bf24.  Upgrade source
files in test/addons/ and automatically generated tests from
doc/api/addons.markdown to the new V8 API.

This coincidentally fixes a bug in src/node_object_wrap.h where it was
still using the old V8 weak persistent handle interface, which is gone
in 3.24.