安装 LLVM Clang6.0的脚本

此脚本在macOS和Linux上安装clang， LLVM，libc ++，compiler-rt，libc ++ abi，lldb和lld的6.0版本，包括将clang和LLVM与libc ++本身链接起来。

 属性            大小     日期    时间   名称
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     目录           0  2018-10-18 18:59  install-clang\
     文件          19  2018-10-18 18:59  install-clang\.dockerignore
     文件          20  2018-10-18 18:59  install-clang\.gitignore
     文件         522  2018-10-18 18:59  install-clang\Dockerfile
     文件         383  2018-10-18 18:59  install-clang\Makefile
     文件        5235  2018-10-18 18:59  install-clang\README.md
     文件       13422  2018-10-18 18:59  install-clang\install-clang
     目录           0  2018-10-18 18:59  install-clang\patches.old\
     文件         821  2018-10-18 18:59  install-clang\patches.old\fix-external-project-order.patch
     文件        1123  2018-10-18 18:59  install-clang\patches.old\projects--compiler-rt--link-fix.patch
     文件        1084  2018-10-18 18:59  install-clang\patches.old\projects--libcxx--libcxxabi-symbols.patch
     文件        2179  2018-10-18 18:59  install-clang\patches.old\projects--libcxx--prefix.diff
     文件        1182  2018-10-18 18:59  install-clang\patches.old\projects--libcxxabi--prefix.diff
     文件         568  2018-10-18 18:59  install-clang\patches.old\projects--libcxxabi--unwind_h.patch
     文件        1648  2018-10-18 18:59  install-clang\patches.old\stackmaps-for-elf.ec9de4677ac61.patch
     文件        1169  2018-10-18 18:59  install-clang\patches.old\tools--clang--freebsd-include.patch
     文件         994  2018-10-18 18:59  install-clang\patches.old\tools--clang--include-path.patch
     文件        1851  2018-10-18 18:59  install-clang\patches.old\tools--clang--linker-args.patch
     文件         796  2018-10-18 18:59  install-clang\patches.old\tools--extra--tidy-fix.patch
     目录           0  2018-10-18 18:59  install-clang\patches\
     文件        2773  2018-10-18 18:59  install-clang\patches\projects--libcxx--install_name-macos.diff
     文件        1469  2018-10-18 18:59  install-clang\patches\projects--libcxxabi--install_name-macos.diff
     文件        2322  2018-10-18 18:59  install-clang\patches\tools--clang--linker-args.patch
     文件        3737  2018-10-18 18:59  install-clang\patches\tools--lldb--debugserver-fix.patch
     文件        1067  2018-10-18 18:59  install-clang\patches\tools--lldb--fix-linking.patch
     文件        1255  2018-10-18 18:59  install-clang\patches\tools--lldb--fix-pic.patch
     文件         414  2018-10-18 18:59  install-clang\test.cc
     文件         320  2018-10-18 18:59  install-clang\testit