Failures on Fedora-i686, branch master

[gdb-buildbot@sergiodj.net]

Buildername:
        Fedora-i686

Worker:
        fedora-x86-64-4

Full Build URL:
	https://gdb-buildbot.osci.io/#builders/18/builds/3045

Author:
        Tom Tromey <tom@tromey.com>

Commit tested:
        3b6acaee895303e1800f5a9e3c20127c185a1209

Subject of commit:
        Update more calls to add_prefix_cmd

Testsuite logs (gdb.sum, gdb.log and others):
        https://gdb-buildbot.osci.io/results/Fedora-i686/3b/3b6acaee895303e1800f5a9e3c20127c185a1209/

*** Diff to previous build ***
==============================================
PASS -> FAIL: gdb.mi/list-thread-groups-no-inferior.exp: -list-thread-groups --available
PASS -> FAIL: gdb.mi/list-thread-groups-no-inferior.exp: GDB is still alive
PASS -> KFAIL: gdb.threads/process-dies-while-handling-bp.exp: non_stop=on: cond_bp_target=1: inferior 1 exited
==============================================

*** Complete list of XFAILs for this builder ***

To obtain the list of XFAIL tests for this builder, go to:

        <https://gdb-buildbot.osci.io/results/Fedora-i686/3b/3b6acaee895303e1800f5a9e3c20127c185a1209//xfail.gz>

You can also see a pretty-printed version of the list, with more information
about each XFAIL, by going to:

        <https://gdb-buildbot.osci.io/results/Fedora-i686/3b/3b6acaee895303e1800f5a9e3c20127c185a1209//xfail.table.gz>