FakeVim: Indent block correctly

In situation:

    void f() {
    // Cursor is HERE.
    }

the code after ">i{" command is indented as (with shiftwidth=4):

    void f() {
        // Cursor is HERE.
    }

Change-Id: I48283c91c32fc407bbdb24349f2491461e401ee9
Reviewed-by: hjk <hjk121@nokiamail.com>