Use atexit to register some callback from dso, but there is no
unregister interface. After this dso closed, this callback in
atexit callback chain is invalidate. This workround will save
the dso that the callback come from, then when dso closed, the
relative callbacks would cleared.

Issue： #I6UEZQ
Test：register atexit cb, then dlclose this dso
Signed-off-by: Nhhj <huanghuijin@huawei.com>
Change-Id: I0dfc15366dd51bbe677b9700131fbaf57622499c

Merge pull request !861 from zhangdengyu/supportEDF0404

方案描述：
1、liteos_a调i度框架支持EDF调度算法，默认优先调度EDF策略的任务
2、用户态musl_c库适配新增调度算法，同步修改相关接口以支持用户态创建EDF进程与线程

BREAKING CHANGE:
support EDF对外变更描述：
以下接口支持SCHED_DEADLINE调度策略:
pthread_attr_getschedparam
pthread_attr_setschedparam
pthread_getschedparam
pthread_setschedparam
pthread_create
sched_getscheduler
sched_getparam
sched_setparam
sched_setscheduler

Close：#I6T3P3
Signed-off-by: Nzhangdengyu <zhangdengyu2@huawei.com>
Change-Id: I1ceefc2fdfaecac7a93e5306da629756f9385f84

Merge pull request !855 from fix_libc-test-build-error

Merge pull request !849 from yinchuang/optimize_musl_linker_ram

Issue:I6SL6I
Signed-off-by: Nyinchuang <yinchuang@huawei.com>

Merge pull request !829 from dhy308/release_sigchain_0225

Merge pull request !826 from dhy308/release_tdd_0221

Merge pull request !844 from zhengweiwei/master

Merge pull request !848 from mwx1087526/fix_test_dcngettext

Modify runtest_Windows.bat to push test_dcngettext.mo to '/tmp';
Create /etc/shadow for getspnam_r;
Cancel 6 test shield and add 2 new.

Issue: I6L8HT
Test: Pass: 1156/1160
Signed-off-by: Nmaweiye <maweiye@huawei.com>

Merge pull request !856 from mwx1087526/fix-math

Not check FE status on aarch64

Issue: https://gitee.com/openharmony/third_party_musl/issues/I6QQOO
Test: 20 math tests passed on aarch64
Signed-off-by: Nmaweiye <maweiye@huawei.com>

    Issue: I6HRVC
    Test: Build & Boot Devices
Signed-off-by: Ndhy308 <tony.gan@huawei.com>

Merge pull request !853 from 卢韬/master

Fix version-script in libc-test
Issue: #I6ID6E
Test: xts pass
Signed-off-by: Nguzhihao4 <guzhihao4@huawei.com>
Change-Id: I133b659dba3d320107ec5d0a6c05faf15ad1a14d

满足合入条件、但并发量过大；需要手动合入！

Merge pull request !854 from liwentao/netsys_default

Description: netsys should be enough to determine the network status and default dns is setting by the product instead of libc

Issue: https://gitee.com/openharmony/third_party_musl/issues/I6PCEM?from=project-issue
Test: libc-test pass
Signed-off-by: Nliwentao <liwentao20@huawei.com>

Change-Id: I39bdb98929bbc36b69c2b12f5bf2532be2aa3fe8

Issue: I6NO46

Test: Pass: 1146/1156
Signed-off-by: Nlutao <lutao31@huawei.com>

Issue: #I6LPWU
Signed-off-by: Nguzhihao4 <guzhihao4@huawei.com>
Change-Id: I20304b40ec968261ab9f6ed722327bded44dd012

Merge pull request !850 from liyufan/master

Merge pull request !851 from dhy308/delete_math_x86_64_remquol

Merge pull request !847 from liweihui/master

Merge pull request !825 from wangchen/0217

    Issue: I6KW5Z
    Test: Build & Boot Devices
Signed-off-by: Ndhy308 <tony.gan@huawei.com>

Issue：I6L2A1
Test：no new error reported in libc-test
Signed-off-by: NL_WeiHui <liweihui3@huawei.com>

Issue：I6L2A1
Test：no new error reported in libc-test
Signed-off-by: NL_WeiHui <liweihui3@huawei.com>

Fix codecheck warning for building

Issue:#I6EAWP
Test: Build & Boot devices
Signed-off-by: Nliyufan <liyufan5@huawei.com>

Merge pull request !846 from dhy308/adjust_musl_upgrade_directory

Merge pull request !812 from 卢韬/master

    Delete temp folder musl_1.2.3 and merge tag v1.2.3 from git.musl-libc.org
    Delete folder porting/L1_linux and use oldmalloc for L1 linux
    Delete no modify files form porting/linux

    Issue: I6KW5Z
    Test: Build & Boot Devices
Signed-off-by: Ndhy308 <tony.gan@huawei.com>

Signed-off-by: Nliweihui <liweihui3@huawei.com>

Merge pull request !835 from dhy308/add_hook_calloc

Description: Control coverage instrumentation through the existing switch macro use_clang_coverage

Issue: I6K6H8
Test: rk3568 compilation verification
Signed-off-by: Nzhengweiwei <zhengweiwei7@huawei.com>

Merge pull request !836 from wangchen/0228_malloc

Merge pull request !841 from zhangdengyu/muslUpdate0303

Merge pull request !833 from wangchen/0228

Close：#I6J7QK
Signed-off-by: Nzhangdengyu <zhangdengyu2@huawei.com>
Change-Id: I831750a1f5c945b55d6d48ea9ee14b4f57932d63

Merge pull request !838 from b班的Mark/master