gdb test suite failure on i386 and x86_64 in gdb.base/break.exp

[Cary Coutant]

> This is PR 36690 which has various bits of analysis.

Thanks! I did search for this problem, but I guess I didn't use the
right terms, and it didn't turn up this bug report. Looks like if I
had done another search after analyzing the problem, it probably would
have turned up.

-cary