doc: document possible return values of os.arch()
doc: add nodejs.org.au to community listing
doc: add nodejs.geek.nz to the community page
doc: clarify fs.read() offset argument
cluster: remove duplicate this.errno assignment
cluster: fix shared handle bind error propagation

A failed bind() was already being correctly reported in round-robin
mode. This commit fixes bind() error reporting in shared handle mode.

Fixes #5774.
test: cluster: add 'bind to privileged port' tests
src: remove unused tick_spinner
test: loosen timeout in https-no-reader

fix #5925
child_process: add 'shell' option to .exec()

No test, we can't rely on an alternate shell being available.

Fixes #5935.
doc: vm: fix incorrect API documentation

On timeout, an Error object is thrown, not null.
v8: upgrade to v8 3.20.9
src: don't use NewExternal() with unaligned strings

V8 3.20.9 enforces that external pointers are aligned on a two-byte
boundary.

We cannot portably guarantee that for the source code strings that
tools/js2c.py generates so simply stop using String::NewExternal()
altogether (and by extension String::ExternalAsciiStringResource).

Fixes the following run-time assert:

  FATAL ERROR: v8::String::NewExternal() Pointer is not aligned
dgram: report send errors to cb, don't pass bytes

Passing the number of sent bytes to the callback is superfluous;
datagram sockets operate in atomic mode: either the sendmsg() system
call succeeds or it fails but it never does partial writes.

Instead, report send errors to the callback. UDP error reporting is
fairly haphazard on most platforms. You should not expect reliable
delivery of anything besides EMSGSIZE and (possibly) ENETDOWN and
ENETUNREACH.

Fixes #2608.
assert: replace !!!value with just !value

Not harmful, just code cleanup.

Fixes #5885.
Merge remote-tracking branch 'origin/v0.10'

Conflicts:
	AUTHORS
	ChangeLog
	deps/uv/ChangeLog
	deps/uv/src/version.c
	deps/uv/src/win/fs.c
	src/node.cc
	src/node_crypto.cc
	src/node_os.cc
	src/node_version.h
v8: upgrade v8 to 3.20.11
string_bytes: don't use named imports in header

It imports the definition into every source file that includes
string_bytes.h, as evidenced by the build suddenly breaking left
and right because of missing Handle/Local/String/Value imports.
src: remove unused import in src/node_os.cc
src: const-ify variables in src/node_crypto*

No functional changes, just some code tightening. Clean up some style
inconsistencies while we are here.