crtools: don't include pstree.h in parasite-syscall.h

pstree and parasite are two different subsystems, so it "should" not
depend on each other.

parasite-syscall uses the pid struct, so this patch moves it in a
separate header.
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

include/parasite-syscall.h

 #ifndef __CR_PARASITE_SYSCALL_H__
 #define __CR_PARASITE_SYSCALL_H__
 
-#define BUILTIN_SYSCALL_SIZE	8
+#include "pid.h"
+#include "list.h"
 
-#include "pstree.h"
+#define BUILTIN_SYSCALL_SIZE	8
 
 struct parasite_dump_thread;
 struct parasite_dump_misc;

include/pid.h

+#ifndef __CR_PID_H__
+#define __CR_PID_H__
+
+struct pid {
+	/*
+	 * The @real pid is used to fetch tasks during dumping stage,
+	 * This is a global pid seen from the context where the dumping
+	 * is running.
+	 */
+	pid_t real;
+
+	/*
+	 * The @virt pid is one which used in the image itself and keeps
+	 * the pid value to be restored. This pid fetched from the
+	 * dumpee context, because the dumpee might have own pid namespace.
+	 */
+	pid_t virt;
+};
+
+#endif

include/pstree.h

@@ -2,6 +2,7 @@
 #define __CR_PSTREE_H__
 
 #include "list.h"
+#include "pid.h"
 #include "crtools.h"
 #include "protobuf/core.pb-c.h"
 
@@ -11,22 +12,6 @@
  */
 #define INIT_PID	(1)
 
-struct pid {
-	/*
-	 * The @real pid is used to fetch tasks during dumping stage,
-	 * This is a global pid seen from the context where the dumping
-	 * is running.
-	 */
-	pid_t real;
-
-	/*
-	 * The @virt pid is one which used in the image itself and keeps
-	 * the pid value to be restored. This pid fetched from the
-	 * dumpee context, because the dumpee might have own pid namespace.
-	 */
-	pid_t virt;
-};
-
 struct pstree_item {
 	struct pstree_item	*parent;
 	struct list_head	children;	/* list of my children */