PATCH: dbg won't show nested values

[John Birch]

Hi,

The data passed into gdb when expanding some nested values (on the watch tab) 
was incorrect, supplying some of the intermediate placeholder types rather 
than the actual member names. ie "this.<KMainWindow>.<QMainWindow>.d" rather 
than "this.d".

However, this bug is strange as it should not be working properly in previous 
versions! Before applying, can you test to see if this is a problem on your 
machine, because it may be caused by my cvs snapshot of gdb. :(

The easiest way to test is to create a normal app and place a breakpoint on 
the constructor of the derived app class. Then expand "this" variable, then 
<KMainWindow> then <QMainWindow> then <QObject> then senderObjects and its 
children. Any (all) of these may fail and display some odd looking gdb 
message. If they do, then this patch should fix the problems.

This also cleans up a display problem with some classes that look like 
QStrings, but arn't, that causes the dbg to ask for a displayable string that 
doesn't exist from gdb.

Thanks,

jbb
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