[lld][ELF][x86_64,hexagon] Changed dynamic atoms to live in anonymous namespace
so that their names are hidden.

This addresses comments raised by Sean/Rafael.


git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@182230 91177308-0d34-0410-b5e6-96231b3b80d8
[lld] Update a test file for r180209.

This binary file is created from shared.c.

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@182410 91177308-0d34-0410-b5e6-96231b3b80d8
[lld][ELF] Inline header files into the one file using it

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@182427 91177308-0d34-0410-b5e6-96231b3b80d8