Rename CPUState to CPUOldState.

Upstream qemu has split the cpu state into two new data structures:

  CPUState -> is used to model the CPU state through the QEMU
              object model.

  CPUArchState -> actually a macro that aliases CPUArmState,
                  CPUX86State or CPUMIPSState.

Both were part of the "CPUState" in the current emulator sources.

Previous patches introduced CPUArchState, as a simple alias to the
machine-specific state. This patch renames any use of CPUState in
the current code to CPUOldState, except within target-*/ directories
where it is replaced by CPU${ARCH}State instead.

This will allow bringing the upstream CPUState definition in the
source tree, and slowly migrate everything to the right location.

Change-Id: I88b79e6e89f1f36084dc2642e1cf415135e4da09
diff --git a/vl-android.c b/vl-android.c
index fdc2508..ff8ecb9 100644
--- a/vl-android.c
+++ b/vl-android.c
@@ -2556,7 +2556,7 @@
     int tb_size;
     const char *pid_file = NULL;
     const char *incoming = NULL;
-    CPUState *env;
+    CPUOldState *env;
     int show_vnc_port = 0;
     IniFile*  hw_ini = NULL;
     STRALLOC_DEFINE(kernel_params);
@@ -4352,7 +4352,7 @@
 
     current_machine = machine;
 
-    /* Set KVM's vcpu state to qemu's initial CPUState. */
+    /* Set KVM's vcpu state to qemu's initial CPUOldState. */
     if (kvm_enabled()) {
         int ret;