enable self-tests while building · Pull Request !4 · src-anolis-os/libunwind

## make check 在构建时运行内置测试

Patch1: libunwind-skip-no-coredump.patch
Patch2: libunwind-no-dl-iterate-phdr.patch
这2个patch能解决x86平台的test失败问题

```
   libunwind 1.6.2: tests/test-suite.log
===========================================
# TOTAL: 36
# PASS:  34
# SKIP:  0
# XFAIL: 0
# FAIL:  2
# XPASS: 0
# ERROR: 0
.. contents:: :depth: 2
FAIL: run-check-namespace
=========================
  ERROR: Extraneous symbols:
000000000000de45 W dl_iterate_phdr.c.a8d8d212
  ERROR: Extraneous symbols:
00000000000120c2 W dl_iterate_phdr.c.a8d8d212
FAILURE: Detected 2 errors
FAIL run-check-namespace (exit status: 1)
FAIL: run-coredump-unwind
=========================
./run-coredump-unwind: line 49: 2192053 Segmentation fault      (core dumped) ( cd $TEMPDIR; ulimit -c 10000; ./crasher backing_files ) 2> /dev/null
test-coredump-unwind: _UCD_create('/tmp/libunwind-test-xzhulPDyEJ/core*') failed
FAIL run-coredump-unwind (exit status: 1)
```

aarch64平台下，下列测试用例无法通过，查询项目github issue，该情况属实，aarch64的测试尚不完善，因此暂时跳过所有测试
```
PASS: test-proc-info
PASS: test-static-link
PASS: test-strerror
PASS: Gtest-bt
PASS: Ltest-bt
../config/test-driver: line 107: 41152 Segmentation fault      (core dumped) "$@" > $log_file 2>&1
FAIL: Gtest-exc
../config/test-driver: line 107: 41186 Segmentation fault      (core dumped) "$@" > $log_file 2>&1
FAIL: Ltest-exc
PASS: Gtest-init
PASS: Ltest-init
PASS: Gtest-concurrent
PASS: Ltest-concurrent
PASS: Gtest-resume-sig
PASS: Ltest-resume-sig
PASS: Gtest-resume-sig-rt
PASS: Ltest-resume-sig-rt
PASS: Gtest-trace
PASS: Ltest-trace
PASS: Ltest-init-local-signal
FAIL: Ltest-mem-validate
PASS: test-async-sig
PASS: test-flush-cache
PASS: test-init-remote
PASS: test-mem
PASS: test-reg-state
PASS: Ltest-varargs
PASS: Ltest-nomalloc
PASS: Ltest-nocalloc
PASS: Lrs-race
FAIL: test-ptrace
PASS: test-setjmp
FAIL: run-check-namespace
FAIL: run-ptrace-mapper
FAIL: run-ptrace-misc
SKIP: run-coredump-unwind
============================================================================
Testsuite summary for libunwind 1.6.2
============================================================================
# TOTAL: 34
# PASS:  26
# SKIP:  1
# XFAIL: 0
# FAIL:  7
# XPASS: 0
# ERROR: 0
```

aarch64有若干测试无法通过，暂且无视测试失败

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