JDWP: allow VirtualMachine.Resume on partial suspension
JDWP: allow VirtualMachine.Resume on partial suspension

Allows to resume multiple threads with a single VirtualMachine.Resume
command. When some threads are suspended for an event by the debugger
with a suspend count of 1 (other threads are running), a debugger can
resume them all this way.

Bug: 18924933

(cherry picked from commit f9d233dae8ca66ed5a2a474155d6bee0d74c355b)

Change-Id: I948c3b50d43693e86ae31e0928a33a467328583f

treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst