Conflicts:

	doc/api/child_process.markdown

Conflicts:

	doc/template.html

Conflicts:

	Makefile

This puts all images in doc/images/ and references them via
http://nodejs.org/images/.

Any complaints about copyright usage etc. can thus be node/joyent's
problem, rather than the problem of a downstream distribution channel.

Conflicts:

	Makefile

Fixes #2827.

This reverts commit cd4cb8e7.

Fixes #2090.
Fixes #2336.

Otherwise, it'll be ref'ed, and keep the process hanging.