Add the align_to_end option to .bundle_lock in the MC implementation of aligned
bundling. The document describing this feature and the implementation has also
been updated:

https://sites.google.com/a/chromium.org/dev/nativeclient/pnacl/aligned-bundling-support-in-llvm


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171797 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCNullStreamer.cpp b/lib/MC/MCNullStreamer.cpp
index d1cd006..364c324 100644
--- a/lib/MC/MCNullStreamer.cpp
+++ b/lib/MC/MCNullStreamer.cpp
@@ -96,7 +96,7 @@
     virtual void EmitInstruction(const MCInst &Inst) {}
 
     virtual void EmitBundleAlignMode(unsigned AlignPow2) {}
-    virtual void EmitBundleLock() {}
+    virtual void EmitBundleLock(bool AlignToEnd) {}
     virtual void EmitBundleUnlock() {}
 
     virtual void FinishImpl() {}