compel: plugins,std -- Use proper quotes in exported header

In UAPI there should be no -iquote-d headers.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>

compel/plugins/include/uapi/plugin-std.h

 #ifndef COMPEL_PLUGIN_STD_STD_H__
 #define COMPEL_PLUGIN_STD_STD_H__
 
-#include "uapi/plugins.h"
-#include "uapi/std/syscall.h"
+#include <compel/plugins.h>
+#include <compel/plugins/std/syscall.h>
 
 #endif /* COMPEL_PLUGIN_STD_STD_H__ */