Problem was exposed in 12798c62.

Regression from the refactor to move more things into JS.

Causing many test failures due to lingering process

This reverts commit 8b754a9e.

ERR_error_string() expects a buffer of at least 256 bytes, the input buffer
was not even half that size. Use ERR_error_string_n() instead.

Add test for bug fixed in joyent/libuv@2640aae1

Fixes #1714.
Fixes #1715.

Conflicts:
	deps/http_parser/http_parser.c
	deps/http_parser/test.c
	lib/repl.js

If hasOwnProperty is overridden, then calling `obj.hasOwnProperty(prop)`
can fail.  Any time a dictionary of user-generated items is built, we
cannot rely on hasOwnProperty being safe, so must call it from the
Object.prototype explicitly.

and use return value from sync uv_fs functions

Fixes #1695

group commands in help message, added shortcuts info