lldb arm64 import.

These changes were written by Greg Clayton, Jim Ingham, Jason Molenda.

It builds cleanly against TOT llvm with xcodebuild.  I updated the
cmake files by visual inspection but did not try a build.  I haven't
built these sources on any non-Mac platforms - I don't think this
patch adds any code that requires darwin, but please let me know if
I missed something.

In debugserver, MachProcess.cpp and MachTask.cpp were renamed to
MachProcess.mm and MachTask.mm as they picked up some new Objective-C
code needed to launch processes when running on iOS.

llvm-svn: 205113
diff --git a/lldb/scripts/Python/interface/SBTarget.i b/lldb/scripts/Python/interface/SBTarget.i
index d26b3fa..87d5c5b 100644
--- a/lldb/scripts/Python/interface/SBTarget.i
+++ b/lldb/scripts/Python/interface/SBTarget.i
@@ -94,6 +94,13 @@
     
     bool
     AddSuppressFileAction (int fd, bool read, bool write);
+
+    void
+    SetLaunchEventData (const char *data);
+    
+    const char *
+    GetLaunchEventData () const;
+    
 };
 
 class SBAttachInfo