[Qemu-devel] [PATCH v4 0/9]: Introduce the RunState type

[Luiz Capitulino]

It replaces the VMSTOP macros and allows us to drop some global variables.

Additionally, the problem with issuing 'cont' when the VM is in bad state
is addressed and we make the current state available in QMP and HMP.

** IMPORTANT: patch 04/09 is a new addition, it needs careful review.

changelog
---------

v4

o Rebase on top of latest master
o Fix qemu_system_vmstop_request() to take a RunState argument
o Drop RSTATE_RESTORE_FAILED, it's not currently used
o Check for valid transitions (will abort on invalid ones)

v3

o Rebase on top of latest master
o Fix a spice VM change state handler which hasn't been converted
o Turn runstate_get() into runstate_check()
o Rename vm_is_running() to runstate_is_running()
o Other minor renames and log improvements

v2

o Rename the new type from QemuState to RunState
  (also renames related functions)
o Rename the enum values to contain proper word seperation
o Redo patch 'Monitor: Don't allow cont on bad VM state' to not use a global
  variable
o Make the current VM state also available in HMP
o Improve some commit logs a bit