Failures on Fedora-ppc64le-native-extended-gdbserver-m64, branch master

[sergiodj+buildbot@sergiodj.net]

Buildslave:
	fedora-ppc64le-1

Full Build URL:
	<http://gdb-build.sergiodj.net/builders/Fedora-ppc64le-native-extended-gdbserver-m64/builds/5105>

Commit(s) tested:
	6e5d74e74756fafe59e8198c4cc462cf7c57e12c

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

Subject:
	Fix PR 21218: GDB dumps core when escaping newline in multi-line command

Testsuite log (gdb.sum and gdb.log) URL(s):
	<http://gdb-build.sergiodj.net/results/Fedora-ppc64le-native-extended-gdbserver-m64/6e/6e5d74e74756fafe59e8198c4cc462cf7c57e12c/>