[binutils-gdb] Accept all-stop alternative in mi_expect_interrupt

[sergiodj+buildbot@redhat.com]

*** TEST RESULTS FOR COMMIT a8d9763abd6c461d646034537633fb03f5eabfd1 ***

Author: Simon Marchi <simon.marchi@ericsson.com>
Branch: master
Commit: a8d9763abd6c461d646034537633fb03f5eabfd1

Accept all-stop alternative in mi_expect_interrupt
When interrupting a thread in non-stop vs all-stop, the signal given in
the MI *stopped event is not the same. Currently, mi_expect_interrupt only
accepts the case for non-stop, so this adds the alternative for all-stop.

gdb/testsuite/ChangeLog:

	* lib/mi-support.exp (mi_expect_interrupt): Accept
	alternative event for when in all-stop mode.