Pass -32/-64 to the assembler when building for sparc/sparc64.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@198911 91177308-0d34-0410-b5e6-96231b3b80d8
Give the linker the right ELF type for SPARC targets.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@198912 91177308-0d34-0410-b5e6-96231b3b80d8