MI: type prefixes for values

[Eli Zaretskii]

> Date: Fri, 17 Feb 2006 14:35:58 -0500
> From: Bob Rossi <bob@brasko.net>
> Cc: Vladimir Prus <ghost@cs.msu.su>, gdb@sources.redhat.com
> 
> Eli, I'm suggesting that there is not, and can never be a reliable
> formal description for parsing the data in the field 'value'.

I cannot disagree more.  MI _must_ allow such a description, or else
it fails to meet its design goals.