list of GNU indent versions in gdb_indent.sh

[David Carlton]

I noticed that gdb_indent.sh complained at me because I'm using GNU
indent 2.2.7 instead of 2.2.6.  I ignored the warning, but of course
that's something I don't like to do.  Does anybody have any reason to
believe that GNU indent 2.2.7 or 2.2.8 isn't a reasonable version as
well?  If not, I'll look through the ChangeLogs/NEWS/whatever the
appropriate file is for GNU indent for those versions and, assuming
they don't do anything strange, modify gdb_indent.sh to treat them as
"reasonable".

David Carlton
carlton@math.stanford.edu