The sections that the ELF object writer has to create are very simple and

The sections that the ELF object writer has to create are very simple and
contain only data. Handle them specially instead of using AddSectionToTheEnd.
This moves a hack from the generic assembler to the elf writer. It is also
a bit faster and should make other improvements easier.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120683 91177308-0d34-0410-b5e6-96231b3b80d8