Also remove unused src/stdio_wrap.cc

Fixes #1824.

Fixes #1831

Code can be written:

    var assert = require('assert');
    assert(true);

instead of:

    var assert = require('assert');
    assert.ok(true);

Fixes #1800.

Note this test completes in 3 seconds on v0.4 and 7 minutes on master. NOT
GOOD.

Fixes #1790.

Fixes #1779.

Fixes #1788

See #1726

Fixes #1780.

This breaks Windows.