tools/disktool: Don't use g_mkdir_with_parents()
tools/disktool: Don't use g_mkdir_with_parents()

- Make destpath/hdk directory in init()

- Use g_mkdir() instead of g_mkdir_with_parents() in make_chunk_dir()

cmusatyalab/openisr,cmusatyalab/openisr,cmusatyalab/openisr,cmusatyalab/openisr,cmusatyalab/openisr