[Bug default/19103] New: make abidw --abidiff output on stdout rather than stderr

["woodard at redhat dot com" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=19103

            Bug ID: 19103
           Summary: make abidw --abidiff output on stdout rather than
                    stderr
           Product: libabigail
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: default
          Assignee: dodji at redhat dot com
          Reporter: woodard at redhat dot com
                CC: libabigail at sourceware dot org
  Target Milestone: ---

in the case where abidw is run with the --abidiff it would be helpful if it
emitted its output on stdout rather than stderr. It makes scripting harder, it
splitting off the aborts vs. the abixml correctness issues more difficult and
it forces me to use a command like:

~/bin/abidw --abidiff
/collab/usr/global/tools/order/spack/opt/chaos_5_x86_64_ib/gcc@4.4.7/dyninst@8.2.1-a77e6bbb/lib/libpcontrol.so.8.2.1
2>&1 | less

rather than the normal piping. Since nothing is being printed when you are
doing an abidw --abidiff unless it is a change that must be what you are
looking for when you use the --abidiff option.

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