[Gnu][Driver] Use StringRef conversion functions

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@221648 91177308-0d34-0410-b5e6-96231b3b80d8
Revert "Add support library."

This reverts commit r221583.

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@221649 91177308-0d34-0410-b5e6-96231b3b80d8
[ELF] Change order of section match.

Addressed comments from Sean silva.

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@221650 91177308-0d34-0410-b5e6-96231b3b80d8