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

Merge pull request !516 from zhushengle/spell

Close #I446CX
Signed-off-by: Nzhushengle <zhushengle@huawei.com>
Change-Id: I49e80ffe1a7b579b82aaf45f599623b287eb8e98

Merge pull request !515 from SimonLi/master

Signed-off-by: NSimonLi <likailong@huawei.com>

Merge pull request !514 from lnlan/fix_stl

Merge pull request !512 from phchang/fixlience

Merge pull request !510 from Kiita/liteos_a_unittest

【背景】解除告警
【修改方案】
 格式化修改告警文件的文件头注释格式

re #I44497
Signed-off-by: Nlanleinan <lanleinan@163.com>

Change-Id: If9fa5de0f896ddf8c3fc88408c8f88f633fdb3e7

Merge pull request !509 from 野生毛霉君/master

【背景】解除告警
【修改方案】
 格式化修改告警文件的文件头注释格式

re #I44497
Signed-off-by: yansira <yansira@hotmail.com>
Change-Id: I88c7ade73b086fd0ee13574229d2a4b9795580ec

【背景】解除告警
【修改方案】
 格式化修改告警文件的文件头注释格式

re #I44497
Signed-off-by: Nvcbchang <vcbchang@qq.com>
Change-Id: I7a0d31e11603f591a5370e64505879e1a324d72d

close: #I4443Q
Signed-off-by: Nmucor <mucorwang@gmail.com>

Merge pull request !500 from Kiita/toybox_update_0802

Merge pull request !498 from pcwlno1/bbox_codex

1、判断安全函数的返回值。

Close #I43RQU
Signed-off-by: Npcwlno1 <qidechun@huawei.com>

【背景】liteos_a toybox 命令已知问题修复

【修改方案】
1、修复ls 统计文件大小问题。
Signed-off-by: yansira <yansira@hotmail.com>
Change-Id: I64c41d3970650a434409f332b2659e31bb9223ab

Merge pull request !490 from Caoruihong/kernel_configs

for historical reason, the old config dir is used only for hcs_config
Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: I26f25d5ec81b4b4a0e96c30c3acb3f075107e19e

Merge pull request !485 from Caoruihong/liteipc_datasize

Merge pull request !488 from Caoruihong/unstripped_mksh_toybox

Merge pull request !479 from MGY917/toybox_strip_twice

Merge pull request !473 from MGY917/revert_wz

Merge pull request !473 from MGY917/revert_wz

stripped version used to pack rootfs image, unstripped
used for debug.
Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: I07673238772d6995426ec8b1cff43f1abfea7049

Merge pull request !486 from 刘建东/master

enable gn build for lwip_enhanced

close: #I43GEW
Signed-off-by: Nliujiandong <liujiandong1@huawei.com>

use IPC_IO_DATA_MAX from liteipc_adapter.h
Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: I94f2dd2ff148e8a03ffb2c7b38ab06a34a2d2827

Merge pull request !471 from Harylee/mem

Merge pull request !476 from zhangfanfan2/master

Merge pull request !481 from lnlan/fix_mqueue_0730

Merge pull request !475 from Caoruihong/gn_build_apps

Merge pull request !480 from wangchen/a_codex

Merge pull request !394 from wcc/misc

Merge pull request !382 from guweijie/master

Merge pull request !463 from pcwlno1/bbox_bugfix_upload2

【背景】
mqueue用例压力测试中，会出现无法生成xml现象
【修改方案】
1. 确认是mq_close关闭时未清除用户态文件描述符相关位导致的，
添加清除步骤后，问题解决
【影响】
对现有的产品编译不会有影响。

re #I3ZQDA
Signed-off-by: Nlanleinan <lanleinan@163.com>
Change-Id: I8d467b361465f516ae7105bef38242bfd4805c60

【背景】定期A核代码告警清零。

【修改方案】
根据工具扫描结果，对代码告警进行更改。

【影响】
对现有的产品编译不会有影响。

re #I4378T
Signed-off-by: Nwangchen <253227059@qq.com>

toybox源码编译时，默认会进行strip操作，如下步骤：

//third_party/toybox/scripts/make.sh:340:
! do_loudly ${CROSS_COMPILE}${STRIP} "$UNSTRIPPED" -o "$OUTNAME"

因此在打包的Makefile中再进行STRIP操作是冗余的。

close #I43767

Change-Id: I10a9861b682eb8e556b7af7519c9109eef0b3a94
Signed-off-by: NGuangyao Ma <guangyao.ma@outlook.com>

close: #I434UC
Signed-off-by: Nzff <zhangfanfan2@huawei.com>
Change-Id: If6cdb719412375c79356a50113a0efb45c8968f7