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/7352>

Commit(s) tested:
	222312d359fe0a68f8583ba315583ee8cc94f252

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

Subject:
	Remove regcache_get_ptid

Testsuite log (gdb.sum and gdb.log) URL(s):
	<http://gdb-build.sergiodj.net/results/RHEL-s390x-m64/22/222312d359fe0a68f8583ba315583ee8cc94f252/>