Merge remote-tracking branch 'upstream/master'
Fix example in documentation of target triple sanitization.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@220804 91177308-0d34-0410-b5e6-96231b3b80d8
libcxxrt now implements bad_array_new_length and need to gaurd against multiple defines. Patch from Baptiste Daroussin.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@220882 91177308-0d34-0410-b5e6-96231b3b80d8
libcxxrt defines bad_array_new_length::what() so move that into a conditional compilation block

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@221025 91177308-0d34-0410-b5e6-96231b3b80d8
Partial fix for building w/ libcxxrt on OSX. Patch from C Bergstrom.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@221029 91177308-0d34-0410-b5e6-96231b3b80d8
Mark string_view::to_string as const. Fixes PR21428


git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@221101 91177308-0d34-0410-b5e6-96231b3b80d8
Merge branch 'master' of http://llvm.org/git/libcxx
Merge branch 'master' of github.com:efcs/libcxx