Failures on Debian-s390x-native-gdbserver-m64, branch master

[sergiodj+buildbot@sergiodj.net]

Buildslave:
	debian-jessie-s390x-1

Full Build URL:
	<http://gdb-build.sergiodj.net/builders/Debian-s390x-native-gdbserver-m64/builds/4133>

Commit(s) tested:
	d721ba37d8995b9c11a0b8eef0f4d2dc022f85aa

Author(s) (in the same order as the commits):
	Pedro Alves <palves@redhat.com>

Subject:
	gdb: Make ldirname return a std::string

Testsuite log (gdb.sum and gdb.log) URL(s):
	<http://gdb-build.sergiodj.net/results/Debian-s390x-native-gdbserver-m64/d7/d721ba37d8995b9c11a0b8eef0f4d2dc022f85aa/>