Failures on RHEL-s390x-m64, branch master

[sergiodj+buildbot@redhat.com]

Buildslave:
	rhel-7.1-s390x-1

Full Build URL:
	<http://gdb-build.sergiodj.net/builders/RHEL-s390x-m64/builds/585>

Commit(s) tested:
	2223449a47a8908db2a1992379f54294128a7ee4

Author(s) (in the same order as the commits):
	Kevin Buettner <kevinb@redhat.com>

Subject:
	gdb.dwarf2: Define and use gdb_target_symbol for symbol prefixes

Testsuite log (gdb.sum and gdb.log) URL(s):
	<http://gdb-build.sergiodj.net/cgit/RHEL-s390x-m64/.git/tree/?h=master&id=594fd738b6ffd9da4c1a9dc571c7f5bd212dd8c7>

*** Regressions found ***
============================
PASS -> FAIL: gdb.threads/schedlock.exp: schedlock=off: cmd=next: call_function=1: other threads ran - unlocked
new FAIL: gdb.threads/signal-while-stepping-over-bp-other-thread.exp: step (pattern 3)
============================


*** Regressions against the baseline ***
============================
PASS -> FAIL: gdb.base/siginfo-obj.exp: Extract si_errno
PASS -> FAIL: gdb.base/siginfo-thread.exp: Extract si_errno
PASS -> FAIL: gdb.threads/schedlock.exp: schedlock=off: cmd=next: call_function=1: other threads ran - unlocked
============================