Add needed Clear methods.
<rdar://problem/10596340>

llvm-svn: 146902
diff --git a/lldb/scripts/Python/interface/SBValue.i b/lldb/scripts/Python/interface/SBValue.i
index a1ab884..a9878a2 100644
--- a/lldb/scripts/Python/interface/SBValue.i
+++ b/lldb/scripts/Python/interface/SBValue.i
@@ -67,6 +67,9 @@
     bool
     IsValid();
     
+    void
+    Clear();
+    
     SBError
     GetError();