add default options

[zfben]

set with jQuery.cookie.defaults

[carhartl]

Looks like creating a global i here.

[carhartl]

Instead of

var defaults = {};
for( i in jQuery.cookie.defaults ){
    defaults[i] = jQuery.cookie.defaults[i];
}
options = jQuery.extend(defaults, options);

we can probably write less:

options = jQuery.extend({}, jQuery.cookie.defaults, options);

[zfben]

I have change these code, now looks better, thx

[carhartl]

Now obsolete with f43512e