BREAKING CHANGE:
支持unshare接口对外变更
1.支持unshare接口，flags支持：CLONE_NEWPID, CLONE_NEWTIME, CLONE_NEWUTS

Close #I6BE5A
Signed-off-by: Nzhushengle <zhushengle@huawei.com>
Change-Id: Ib61abad2fa03a7100bf808e93830f2094fa1c5a6

BREAKING CHANGE:
支持pid容器对外变更描述:
1.支持pid容器，使用clone(CLONE_NEWPID)创建
2.shell命令 task -a 不再显示线程信息，只显示系统所有进程信息
3.task命令新增参数-p, task -p pid 可查看改进程下的所有线程信息
4.使用LOS_TaskCreateOnly创建任务时， TSK_INIT_PARAM_S中的processID由原来的记录进程ID修改为记录进程控制块PCB
Close #I68LVW
Signed-off-by: Nzhushengle <zhushengle@huawei.com>
Change-Id: I0895da9099cb285b3195af5e383d0fdeaf5c0087

Change-Id: I46a7642eeee73a4531c241e3ba6290dd302600a7

Close: #I61CLY
Signed-off-by: Nzhangdengyu <zhangdengyu2@huawei.com>
Change-Id: I0faf8e5849c24b108f290e483124f3edaf70ef50

Close #I4Z3BL
Signed-off-by: Nzhushengle <zhushengle@huawei.com>
Change-Id: I5f32d1001ffabc0f725ce65b51ed9b3791e97f2b

Signed-off-by: Nzhushengle <zhushengle@huawei.com>
Change-Id: I31e16c9716de1223db7e4de916af3e010ca5f4e4

1.移动LosTaskCB 至los_sched_pri.h, 解决调度与task的依赖关系
2.调度去进程化
Signed-off-by: Nzhushengle <zhushengle@huawei.com>
Change-Id: Ibd3b618cee59f0b323e2b4fb14354c088b60b733

Close #I4EENF
Signed-off-by: Nzhushengle <zhushengle@huawei.com>
Change-Id: Iaa1582f567eb3524262bea383e0b8238b89b5fe2

killpg：给进程组发信号
waitid：等待进程结束
修改测试用例到full里面

Change-Id: Ice058ab4a6eede8ecbaacea0894c2161e3b9dce2
Signed-off-by: Nwjj <502004968@qq.com>

LiteOS_a中有部分配置宏进行了重复冗余定义，导致当头文件未被包含时，极易引入错误，
故对menuconfig配置宏进行统一处理，均使用#ifdef/#ifndef作为预编译判断方式

Close #I3YEGS

Change-Id: Ife6db770cc66de1d6199a4f3ba3950e9bfd0e71a
Signed-off-by: Nboxi <lewis.liulei@huawei.com>

correct some typos in los_task.c and other files

close https://gitee.com/openharmony/kernel_liteos_a/issues/I3QDB8

Change-Id: I052d930d54e63179b17b77f02c107a015f3cfc3f

add SysFstatat64 SysInfo SysVfork SysGetrusage
fix up SysDup SysFcntl

Change-Id: If41228da62f406312858921e48e2210e04f16a16

Change-Id: Ia6c1f6302407a707b3ec9b805f4c92d8a7970b86