[ob] Correct ovldbreak.exp KFAILs

[Tom Tromey]

>>>>> "Daniel" == Daniel Jacobowitz <drow@false.org> writes:

Mark> Sorry, but I think that's a regression; \003 obviously is an octal
Mark> character escape sequence, \3 isn't.

Daniel> Tom, could you expand on the reason for the change?  On IRC you only
Daniel> mentioned that there was one...

My reading of 6.4.4.4 is that it is an octal character escape
sequence.

escape-sequence:
        octal-escape-sequence

octal-escape-sequence:
        \ octal-digit
        \ octal-digit octal-digit
        \ octal-digit octal-digit octal-digit

I do see now that I wrote the character-constant-parsing code
incorrectly.  I'll make a note to write a patch for that.

Tom