[Patch] 2 enhancement for MatLISP

Hi all,

Attached are 2 patches:

1) Implement "colon"-like behavior of Matlab, but use #\| instead (to avoid clash
with the package separator. So you can write something like: [1|10]
(sent on matlisp-devel, but there are more people subscribed here)

2) Implement colon index. A Matlab matrix access like a(:,2) would translate in
MatLISP into (matrix-ref a :all 1). It uses the keyword :all.

Enjoy.

Michael.