Failures on RHEL-s390x-m64, branch master

[sergiodj+buildbot@sergiodj.net]

Buildslave:
	rhel-7_1-s390x-1

Full Build URL:
	<http://gdb-build.sergiodj.net/builders/RHEL-s390x-m64/builds/7191>

Commit(s) tested:
	b17992c1c02a2d8a832a887c2de23a7f3ab869f8

Author(s) (in the same order as the commits):
	Simon Marchi <simon.marchi@ericsson.com>

Subject:
	Make format_pieces recognize the \e escape sequence

Testsuite log (gdb.sum and gdb.log) URL(s):
	<http://gdb-build.sergiodj.net/results/RHEL-s390x-m64/b1/b17992c1c02a2d8a832a887c2de23a7f3ab869f8/>