Pull in r177252 from upstream clang trunk:

Make sure to use same EABI version for external assembler as for
 integrated as.

This allows us to use gcc on a world built with clang on ARM.

contrib/llvm/tools/clang/lib/Driver/Tools.cpp

@@ -5438,6 +5438,7 @@ void freebsd::Assemble::ConstructJob(Compilation &C, const JobAction &JA,
     switch(getToolChain().getTriple().getEnvironment()) {
     case llvm::Triple::GNUEABI:
     case llvm::Triple::EABI:
+      CmdArgs.push_back("-meabi=5");
       break;
 
     default: