gdb: Improve formatting of 'show architecture' messages

[Alan Modra]

On Mon, Oct 12, 2020 at 03:30:49PM +0100, Andrew Burgess wrote:
> > 	* testsuite/gdb.arch/arm-disassembler-options.exp: Adjust expected
> > 	"target architecture" output.
> > 	* testsuite/gdb.arch/powerpc-d128-regs.exp: Likewise.
> > 	* testsuite/gdb.arch/powerpc-disassembler-options.exp: Likewise.
> > 	* testsuite/gdb.arch/ppc64-symtab-cordic.exp: Likewise.
> > 	* testsuite/gdb.arch/s390-disassembler-options.exp: Likewise.
> 
> Remember these entries should be in gdb/testsuite/ChangeLog, and
> should not have 'testsuite/' at the start.

Nowadays I tend to write ChangeLog entries in my local git commit log,
and only copy to a ChangeLog file when committing.  Which I do by
opening the first file changed, and hitting Ctrl-X,4,a in emacs.  If I
was awake properly I likely would have caught the error before
committing, but thanks for the reminder, mistakes happen!  Committed.

-- 
Alan Modra
Australia Development Lab, IBM