Small name handling cleanups.  Rename getLLVMAssemblerName to getAssemblerName
and change the file it is defined in.  Get rid of some direct uses of DECL_NAME.


git-svn-id: https://llvm.org/svn/llvm-project/dragonegg/trunk@176265 91177308-0d34-0410-b5e6-96231b3b80d8