add .cmd support to generic-x.el

[Peter Tury]

Hi,

I was told that this is the right address to send such requests to: my
generic-x.el doesn't know MS Windows' .cmd extension. As far as I know
this is the same as .bat files, so I added
"\\.[cC][mM][dD]\\'"
to the file extension list of bat-generic-mode's define-generic-mode.
It works now fine for me (as I usually create .cmd files).

Please do the same to the official version also.

Thanks,
P

PS.
I think it is irrelevant, but:
I use EmacsW32 P060501
(GNU Emacs 22.0.50.1 (i386-mingw-nt5.1.2600)
of 2006-05-01 on W2ONE
X server distributor `Microsoft Corp.', version 5.1.2600
configured using `configure --with-gcc (3.4) --cflags -Id:/g/include')