初始化调度时间不以g_sysSchedStartTime是否为0为界限，而以g_sysSchedStartTime是否为64位最大值
为界限，避免特殊以下场景：调度开启时系统时间为0，导致初始化的g_sysSchedStartTime还是0，导致
调度启动后获取的调度时间轴始终为0.
Close  #I45HP5
Signed-off-by: Nzhushengle <zhushengle@huawei.com>
Change-Id: I5272c79f06b53361ee7b931081d3a3276db59073

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>

方案描述：
    1.周期软件定时器超时添加一个startTime字段，用于记录当前软件定时器的开始计时的时间，
    在定时器响应时，开始时间修改为上一次响应的结束时间(消除了中断执行时间对软件定时器
    的影响)。
    2.在执行tick中断的过程当中，持有tick动态计算锁，保证在该过程中不会触发tick周期
    的计算，在tick中断结束时统一计算设置。 --- 提升tick中断的执行效率
    3.在设置tick周期时，减掉tick中断执行的时间，减小周期动态化带来的时间误差
    4.新增LOSCFG_BASE_CORE_TICK_PER_SECOND_MINI配置宏，用于配置tick中断的最小响应精度
Close #I43UQJ
Signed-off-by: Nzhushengle <zhushengle@huawei.com>
Change-Id: Icd1159a1890046b13602b7a18dcd6234d5c61a89

close #I41P8Y
Signed-off-by: NJerryH <huangjieliang@huawei.com>
Change-Id: I01833cf617bbc695543a865dbb994c6c22d4a0a8

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>

功能描述：
  在proc目录下增加power目录，添加powr_mode,power_lock,power_unlock和power_count节点，
  power_mode：节点用于查询和设置系统支持的功耗模式
  power_lock：用于查询和获取低功耗锁，持锁后，将会阻止系统进入低功耗状态
  power_unlock:　用于释放已经持有的低功耗锁，也可查询当前有那些持有低功耗锁
  power_count：用于查询当前持有低功耗锁的个数

Close #I3VS5N

Change-Id: I2e2881cc968eab3c5fa6f9dbd7e8c5e448609407
Signed-off-by: Nzhushengle <zhushengle@huawei.com>

1, for users with privilege, display all users' fd info with the template "Pid  Fd  SysFd Path"
2, for normal user, display its own fd info with the template "Pid Fd Path"

close #I3WB5U
Signed-off-by: Nchenwei <chenwei26@huawei.com>

函数LOS_BitmapFfz有2个参数，注释中只描述了一个参数，丢失了对参数numBits的描述，影响导出API文档。补充函数注释的@param部分。

close #I3U3SF
Signed-off-by: kenneth <459864689@qq.com>

1.remove redundant headfile in kernel, such as:
  compiler.h;debug.h;automount.h;inode.h;syslog.h;net.h;
2.split fs.h to file.h and driver.h
3.move vnode.h and path_cache.h to vfs/include
4.remove redundant interface and defines

close: #I3RTNR
Signed-off-by: Nmucor <mucorwang@gmail.com>

fix typo destroy

close https://gitee.com/openharmony/kernel_liteos_a/issues/I3RR17Signed-off-by: Kenneth <459864689@qq.com>

update  LOS_DL_LIST_IS_END comment

close https://gitee.com/openharmony/kernel_liteos_a/issues/I3TWU6Signed-off-by: kenneth <459864689@qq.com>

close: #I3I768

Change-Id: I4f801df4abe1a9afdf43391c28276e96a5e81513

Close #I3QMN1

Change-Id: I0ddd0c4474f5f6b5a2b1dd6608d642167b5548e6

fix typos length、there、necessary

close https://gitee.com/openharmony/kernel_liteos_a/issues/I3RSY0

Change-Id: I131c70e52d907b6c52232596475f2dba16612fce

Change-Id: I7bb8abb2c8c250373f22d0e6bec5a9765e2f52be

Change-Id: I052d930d54e63179b17b77f02c107a015f3cfc3f

Change-Id: I8d2e9f96e86f4130474da9898791240b5d42328e

Description:Fix limits.h & Adjust some macro definition positions.
Feature or Bugfix:Bugfix
Binary Source:NA

Change-Id: Ia53c1b4b83f60862ac24c5c14a87883fe0af6db0

Description: Fix the problem that the actual implementation of the function does not match the description.

Change-Id: Icdbc0182efc023734ccbe7e80b1926d64a18d01c

Feature or Bugfix:Feature
Binary Source:Huawei
PrivateCode(Yes/No):Yes

Change-Id: I175d2648bc6f9078c34de2c0a5c93fda10b86c47
ChangeID:13306388

Change-Id: Ia6c1f6302407a707b3ec9b805f4c92d8a7970b86

Merge pull request !9 from Caoruihong/N/A