Some minor stuff in NEWS

[Per Starbäck]

In GNU Emacs 22.0.93.1: 

Comments from reading etc/NEWS:

> `string-or-null-p' returns non-nil iff OBJECT is a string or nil.
> `booleanp' returns non-nil iff OBJECT is a t or nil.
                                           ^
Remove 'a'.

> *** rx.el has new corresponding `symbol-end' and `symbol-start' elements.

Better to list these in the other order.

> *** `buffer-undo-list' can allows programmable elements.

"allows" or "can allow"?

> emacs crash.
> When emacs is running in an xterm more key bindings are available.
> The features of cua also works with the standard emacs bindings for
> emacs' filename parsing rules.  The ignored portion can be made dim,
> for emacs editing commands, `Cursor keys' and `Shifted Cursor keys'
> On some systems, when emacs reads the output from a subprocess, the
> emacs tries to read it.
> create a stream or datagram server inside emacs.
> buttons' in emacs buffers.  Buttons are much lighter-weight than the

For consistency should be "Emacs" with a capital.