[cdt-debug-dev] Avoiding .gdbinit

[Ed Swarthout <ed.swarthout@xxxxxxxxx>]

I got hit with the '?'s for memory values mentioned in bug 100471 because 
my .gdbinit file has "set radix 0x10" in it.

It looks like GDBINIT defaults to .gdbinit, but it is not displayed in 
the "GDB command file:" prompt box.  So there doesn't seem to be is a way to 
prevent gdb from using it.

Shouldn't it be displayed in the box so it can be blanked out by the user?

Unfortunately, a blank value has to be special cased since "-nx" would have to 
passed to gdb instead of a blank "--command="

Thanks,
Ed Swarthout
Austin, TX